print<\/strong> (miles)
print<\/strong> (name)<\/p>\n\n\n\n
\u6267\u884c\u4ee5\u4e0a\u7a0b\u5e8f\u4f1a\u8f93\u51fa\u5982\u4e0b\u7ed3\u679c\uff1a<\/p>\n\n\n\n
100\n1000.0\nrunoob<\/pre>\n\n\n\n\u591a\u4e2a\u53d8\u91cf\u8d4b\u503c<\/h3>\n\n\n\n
Python\u5141\u8bb8\u4f60\u540c\u65f6\u4e3a\u591a\u4e2a\u53d8\u91cf\u8d4b\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n
a = b = c = 1<\/pre>\n\n\n\n\u4ee5\u4e0a\u5b9e\u4f8b\uff0c\u521b\u5efa\u4e00\u4e2a\u6574\u578b\u5bf9\u8c61\uff0c\u503c\u4e3a 1\uff0c\u4ece\u540e\u5411\u524d\u8d4b\u503c\uff0c\u4e09\u4e2a\u53d8\u91cf\u88ab\u8d4b\u4e88\u76f8\u540c\u7684\u6570\u503c\u3002<\/p>\n\n\n\n
\u60a8\u4e5f\u53ef\u4ee5\u4e3a\u591a\u4e2a\u5bf9\u8c61\u6307\u5b9a\u591a\u4e2a\u53d8\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n
a, b, c = 1, 2, \"runoob\"<\/pre>\n\n\n\n\u4ee5\u4e0a\u5b9e\u4f8b\uff0c\u4e24\u4e2a\u6574\u578b\u5bf9\u8c61 1 \u548c 2 \u7684\u5206\u914d\u7ed9\u53d8\u91cf a \u548c b\uff0c\u5b57\u7b26\u4e32\u5bf9\u8c61 “runoob” \u5206\u914d\u7ed9\u53d8\u91cf c\u3002<\/p>\n\n\n\n
\u53ef\u4ee5\u901a\u8fc7 type()<\/strong> \u51fd\u6570\u67e5\u770b\u53d8\u91cf\u7684\u7c7b\u578b\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
# \u53d8\u91cf\u5b9a\u4e49
x = 10 # \u6574\u6570
y = 3.14 # \u6d6e\u70b9\u6570
name = “Alice” # \u5b57\u7b26\u4e32
is_active = True # \u5e03\u5c14\u503c<\/p>\n\n\n\n# \u591a\u53d8\u91cf\u8d4b\u503c
a, b, c = 1, 2, “three”<\/p>\n\n\n\n# \u67e5\u770b\u6570\u636e\u7c7b\u578b
print<\/strong>(type(x)) # <class ‘int’>
print<\/strong>(type(y)) # <class ‘float’>
print<\/strong>(type(name)) # <class ‘str’>
print<\/strong>(type(is_active)) # <class ‘bool’><\/p>\n\n\n\n
\n\n\n\n\u6807\u51c6\u6570\u636e\u7c7b\u578b<\/h2>\n\n\n\n
Python3 \u4e2d\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\u6709\uff1a<\/p>\n\n\n\n
\n
- Number\uff08\u6570\u5b57\uff09<\/li>\n\n\n\n
- String\uff08\u5b57\u7b26\u4e32\uff09<\/li>\n\n\n\n
- bool\uff08\u5e03\u5c14\u7c7b\u578b\uff09<\/li>\n\n\n\n
- List\uff08\u5217\u8868\uff09<\/li>\n\n\n\n
- Tuple\uff08\u5143\u7ec4\uff09<\/li>\n\n\n\n
- Set\uff08\u96c6\u5408\uff09<\/li>\n\n\n\n
- Dictionary\uff08\u5b57\u5178\uff09<\/li>\n<\/ul>\n\n\n\n
Python3 \u7684\u516d\u4e2a\u6807\u51c6\u6570\u636e\u7c7b\u578b\u4e2d\uff1a<\/p>\n\n\n\n
\n
- \u4e0d\u53ef\u53d8\u6570\u636e\uff083 \u4e2a\uff09\uff1a<\/strong>Number\uff08\u6570\u5b57\uff09\u3001String\uff08\u5b57\u7b26\u4e32\uff09\u3001Tuple\uff08\u5143\u7ec4\uff09\uff1b<\/li>\n\n\n\n
- \u53ef\u53d8\u6570\u636e\uff083 \u4e2a\uff09\uff1a<\/strong>List\uff08\u5217\u8868\uff09\u3001Dictionary\uff08\u5b57\u5178\uff09\u3001Set\uff08\u96c6\u5408\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
\u6b64\u5916\u8fd8\u6709\u4e00\u4e9b\u9ad8\u7ea7\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5982: \u5b57\u8282\u6570\u7ec4\u7c7b\u578b(bytes)\u3002<\/p>\n\n\n\n
\n\n\n\nNumber\uff08\u6570\u5b57\uff09<\/h2>\n\n\n\n
Python3 \u652f\u6301 int\u3001float\u3001bool\u3001complex\uff08\u590d\u6570\uff09<\/strong>\u3002<\/p>\n\n\n\n
\u5728Python 3\u91cc\uff0c\u53ea\u6709\u4e00\u79cd\u6574\u6570\u7c7b\u578b int\uff0c\u8868\u793a\u4e3a\u957f\u6574\u578b\uff0c\u6ca1\u6709 python2 \u4e2d\u7684 Long\u3002<\/p>\n\n\n\n
\u50cf\u5927\u591a\u6570\u8bed\u8a00\u4e00\u6837\uff0c\u6570\u503c\u7c7b\u578b\u7684\u8d4b\u503c\u548c\u8ba1\u7b97\u90fd\u662f\u5f88\u76f4\u89c2\u7684\u3002<\/p>\n\n\n\n
\u5185\u7f6e\u7684 type() \u51fd\u6570\u53ef\u4ee5\u7528\u6765\u67e5\u8be2\u53d8\u91cf\u6240\u6307\u7684\u5bf9\u8c61\u7c7b\u578b\u3002<\/p>\n\n\n\n
>>> a, b, c, d = 20, 5.5, True, 4+3j\n>>> print(type(a), type(b), type(c), type(d))\n<class 'int'> <class 'float'> <class 'bool'> <class 'complex'><\/pre>\n\n\n\n\u6b64\u5916\u8fd8\u53ef\u4ee5\u7528 isinstance \u6765\u5224\u65ad\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> a = 111
>>> isinstance(a, int)
True
>>><\/p>\n\n\n\nisinstance \u548c type \u7684\u533a\u522b\u5728\u4e8e\uff1a<\/p>\n\n\n\n
\n
- type()\u4e0d\u4f1a\u8ba4\u4e3a\u5b50\u7c7b\u662f\u4e00\u79cd\u7236\u7c7b\u7c7b\u578b\u3002<\/li>\n\n\n\n
- isinstance()\u4f1a\u8ba4\u4e3a\u5b50\u7c7b\u662f\u4e00\u79cd\u7236\u7c7b\u7c7b\u578b\u3002<\/li>\n<\/ul>\n\n\n\n
>>> class A:\n... pass\n... \n>>> class B(A):\n... pass\n... \n>>> isinstance(A(), A)\nTrue\n>>> type(A()) == A \nTrue\n>>> isinstance(B(), A)\nTrue\n>>> type(B()) == A\nFalse<\/pre>\n\n\n\n\n\u6ce8\u610f\uff1a<\/strong>Python3 \u4e2d\uff0cbool \u662f int \u7684\u5b50\u7c7b\uff0cTrue \u548c False \u53ef\u4ee5\u548c\u6570\u5b57\u76f8\u52a0\uff0c True==1\u3001False==0<\/strong> \u4f1a\u8fd4\u56de True<\/strong>\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7 is<\/strong> \u6765\u5224\u65ad\u7c7b\u578b\u3002<\/p>\n\n\n\n
>>> issubclass(bool, int) \nTrue\n>>> True==1\nTrue\n>>> False==0\nTrue\n>>> True+1\n2\n>>> False+1\n1\n>>> 1 is True\n<python-input-12>:1: SyntaxWarning: \"is\" with 'int' literal. Did you mean \"==\"?\n 1 is True\nFalse\n>>> 0 is False\n<python-input-13>:1: SyntaxWarning: \"is\" with 'int' literal. Did you mean \"==\"?\n 0 is False\nFalse<\/pre>\n\n\n\n\u4ec0\u4e48\u4f1a\u51fa\u73b0 SyntaxWarning\uff1f<\/strong><\/p>\n\n\n\n
Python \u68c0\u6d4b\u5230\u4f60\u5728\u7528 is \u6bd4\u8f83\u4e00\u4e2a\u5b57\u9762\u91cf\u6574\u6570\uff08\u5982 1\uff09\u548c True\uff0c\u8fd9\u901a\u5e38\u662f\u4ee3\u7801\u9519\u8bef\uff08\u56e0\u4e3a is \u6bd4\u8f83\u7684\u662f\u8eab\u4efd\uff0c\u800c\u4e0d\u662f\u503c\uff09\u3002<\/p>\n\n\n\n
Python \u5efa\u8bae\u4f60\u4f7f\u7528 == \u6765\u6bd4\u8f83\u503c\u662f\u5426\u76f8\u7b49\uff0c\u9664\u975e\u4f60\u786e\u5b9e\u60f3\u68c0\u67e5\u662f\u5426\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002<\/p>\n\n\n\n
\u5728 Python2 \u4e2d\u662f\u6ca1\u6709\u5e03\u5c14\u578b\u7684\uff0c\u5b83\u7528\u6570\u5b57 0 \u8868\u793a False\uff0c\u7528 1 \u8868\u793a True\u3002<\/p>\n<\/blockquote>\n\n\n\n
\u5f53\u4f60\u6307\u5b9a\u4e00\u4e2a\u503c\u65f6\uff0cNumber \u5bf9\u8c61\u5c31\u4f1a\u88ab\u521b\u5efa\uff1a<\/p>\n\n\n\n
var1 = 1\nvar2 = 10<\/pre>\n\n\n\n\u60a8\u4e5f\u53ef\u4ee5\u4f7f\u7528del\u8bed\u53e5\u5220\u9664\u4e00\u4e9b\u5bf9\u8c61\u5f15\u7528\u3002<\/p>\n\n\n\n
del<\/strong> \u8bed\u53e5\u7684\u8bed\u6cd5\u662f\uff1a<\/p>\n\n\n\n
del var1[, var2[, var3[...., varN]]]<\/pre>\n\n\n\n\u60a8\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 del<\/strong> \u8bed\u53e5\u5220\u9664\u5355\u4e2a\u6216\u591a\u4e2a\u5bf9\u8c61\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n
del var\ndel var_a, var_b<\/pre>\n\n\n\n\u6570\u503c\u8fd0\u7b97<\/h3>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> 5 + 4 # \u52a0\u6cd5
9
>>> 4.3 – 2 # \u51cf\u6cd5
2.3
>>> 3 * 7 # \u4e58\u6cd5
21
>>> 2 \/ 4 # \u9664\u6cd5\uff0c\u5f97\u5230\u4e00\u4e2a\u6d6e\u70b9\u6570
0.5
>>> 2 \/\/ 4 # \u9664\u6cd5\uff0c\u5f97\u5230\u4e00\u4e2a\u6574\u6570
0
>>> 17 % 3 # \u53d6\u4f59
2
>>> 2 ** 5 # \u4e58\u65b9
32<\/p>\n\n\n\n\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n
\n
- 1\u3001Python\u53ef\u4ee5\u540c\u65f6\u4e3a\u591a\u4e2a\u53d8\u91cf\u8d4b\u503c\uff0c\u5982a, b = 1, 2\u3002<\/li>\n\n\n\n
- 2\u3001\u4e00\u4e2a\u53d8\u91cf\u53ef\u4ee5\u901a\u8fc7\u8d4b\u503c\u6307\u5411\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61\u3002<\/li>\n\n\n\n
- 3\u3001\u6570\u503c\u7684\u9664\u6cd5\u5305\u542b\u4e24\u4e2a\u8fd0\u7b97\u7b26\uff1a\/<\/strong>\u00a0\u8fd4\u56de\u4e00\u4e2a\u6d6e\u70b9\u6570\uff0c\/\/<\/strong>\u00a0\u8fd4\u56de\u4e00\u4e2a\u6574\u6570\u3002<\/li>\n\n\n\n
- 4\u3001\u5728\u6df7\u5408\u8ba1\u7b97\u65f6\uff0cPython\u4f1a\u628a\u6574\u578b\u8f6c\u6362\u6210\u4e3a\u6d6e\u70b9\u6570\u3002<\/li>\n<\/ul>\n\n\n\n
\u6570\u503c\u7c7b\u578b\u5b9e\u4f8b<\/h3>\n\n\n\n
int<\/th> float<\/th> complex<\/th><\/tr> 10<\/td> 0.0<\/td> 3.14j<\/td><\/tr> 100<\/td> 15.20<\/td> 45.j<\/td><\/tr> -786<\/td> -21.9<\/td> 9.322e-36j<\/td><\/tr> 080<\/td> 32.3e+18<\/td> .876j<\/td><\/tr> -0490<\/td> -90.<\/td> -.6545+0J<\/td><\/tr> -0x260<\/td> -32.54e100<\/td> 3e+26J<\/td><\/tr> 0x69<\/td> 70.2E-12<\/td> 4.53e-7j<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n Python \u8fd8\u652f\u6301\u590d\u6570\uff0c\u590d\u6570\u7531\u5b9e\u6570\u90e8\u5206\u548c\u865a\u6570\u90e8\u5206\u6784\u6210\uff0c\u53ef\u4ee5\u7528 a + bj<\/strong>\uff0c\u6216\u8005 complex(a,b)<\/strong> \u8868\u793a\uff0c \u590d\u6570\u7684\u5b9e\u90e8 a<\/strong> \u548c\u865a\u90e8 b<\/strong> \u90fd\u662f\u6d6e\u70b9\u578b\u3002<\/p>\n\n\n\n
\n\n\n\nString\uff08\u5b57\u7b26\u4e32\uff09<\/h2>\n\n\n\n
Python\u4e2d\u7684\u5b57\u7b26\u4e32\u7528\u5355\u5f15\u53f7 ‘<\/strong> \u6216\u53cc\u5f15\u53f7 “<\/strong> \u62ec\u8d77\u6765\uff0c\u540c\u65f6\u4f7f\u7528\u53cd\u659c\u6760 \\<\/strong> \u8f6c\u4e49\u7279\u6b8a\u5b57\u7b26\u3002<\/p>\n\n\n\n
\u5b57\u7b26\u4e32\u7684\u622a\u53d6\u7684\u8bed\u6cd5\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\u53d8\u91cf[\u5934\u4e0b\u6807:\u5c3e\u4e0b\u6807]<\/pre>\n\n\n\n\u7d22\u5f15\u503c\u4ee5 0 \u4e3a\u5f00\u59cb\u503c\uff0c-1 \u4e3a\u4ece\u672b\u5c3e\u7684\u5f00\u59cb\u4f4d\u7f6e\u3002<\/p>\n\n\n\n
<\/figure>\n\n\n\n
\u52a0\u53f7 +<\/strong> \u662f\u5b57\u7b26\u4e32\u7684\u8fde\u63a5\u7b26\uff0c \u661f\u53f7 *<\/strong> \u8868\u793a\u590d\u5236\u5f53\u524d\u5b57\u7b26\u4e32\uff0c\u4e0e\u4e4b\u7ed3\u5408\u7684\u6570\u5b57\u4e3a\u590d\u5236\u7684\u6b21\u6570\u3002\u5b9e\u4f8b\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
#!\/usr\/bin\/python3<\/p>\n\n\n\n
str = ‘Runoob’ # \u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u53d8\u91cf<\/p>\n\n\n\n
print<\/strong>(str) # \u6253\u5370\u6574\u4e2a\u5b57\u7b26\u4e32
print<\/strong>(str[0:-1]) # \u6253\u5370\u5b57\u7b26\u4e32\u7b2c\u4e00\u4e2a\u5230\u5012\u6570\u7b2c\u4e8c\u4e2a\u5b57\u7b26\uff08\u4e0d\u5305\u542b\u5012\u6570\u7b2c\u4e00\u4e2a\u5b57\u7b26\uff09
print<\/strong>(str[0]) # \u6253\u5370\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26
print<\/strong>(str[2:5]) # \u6253\u5370\u5b57\u7b26\u4e32\u7b2c\u4e09\u5230\u7b2c\u4e94\u4e2a\u5b57\u7b26\uff08\u4e0d\u5305\u542b\u7d22\u5f15\u4e3a 5 \u7684\u5b57\u7b26\uff09
print<\/strong>(str[2:]) # \u6253\u5370\u5b57\u7b26\u4e32\u4ece\u7b2c\u4e09\u4e2a\u5b57\u7b26\u5f00\u59cb\u5230\u672b\u5c3e
print<\/strong>(str * 2) # \u6253\u5370\u5b57\u7b26\u4e32\u4e24\u6b21
print<\/strong>(str + “TEST”) # \u6253\u5370\u5b57\u7b26\u4e32\u548c”TEST”\u62fc\u63a5\u5728\u4e00\u8d77<\/p>\n\n\n\n\u6267\u884c\u4ee5\u4e0a\u7a0b\u5e8f\u4f1a\u8f93\u51fa\u5982\u4e0b\u7ed3\u679c\uff1a<\/p>\n\n\n\n
Runoob\nRunoo\nR\nnoo\nnoob\nRunoobRunoob\nRunoobTEST<\/pre>\n\n\n\nPython \u4f7f\u7528\u53cd\u659c\u6760 \\<\/strong> \u8f6c\u4e49\u7279\u6b8a\u5b57\u7b26\uff0c\u5982\u679c\u4f60\u4e0d\u60f3\u8ba9\u53cd\u659c\u6760\u53d1\u751f\u8f6c\u4e49\uff0c\u53ef\u4ee5\u5728\u5b57\u7b26\u4e32\u524d\u9762\u6dfb\u52a0\u4e00\u4e2a r<\/strong>\uff0c\u8868\u793a\u539f\u59cb\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> print<\/strong>(‘Ru\\n<\/strong>oob’)
Ru
oob
>>> print<\/strong>(r’Ru\\n<\/strong>oob’)
Ru\\noob
>>><\/p>\n\n\n\n\u53e6\u5916\uff0c\u53cd\u659c\u6760(\\)\u53ef\u4ee5\u4f5c\u4e3a\u7eed\u884c\u7b26\uff0c\u8868\u793a\u4e0b\u4e00\u884c\u662f\u4e0a\u4e00\u884c\u7684\u5ef6\u7eed\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528 “””…”””<\/strong> \u6216\u8005 ”’…”’<\/strong> \u8de8\u8d8a\u591a\u884c\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff0cPython \u6ca1\u6709\u5355\u72ec\u7684\u5b57\u7b26\u7c7b\u578b\uff0c\u4e00\u4e2a\u5b57\u7b26\u5c31\u662f\u957f\u5ea6\u4e3a1\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> word = ‘Python’
>>> print<\/strong>(word[0], word[5])
P n
>>> print<\/strong>(word[-1], word[-6])
n P<\/p>\n\n\n\n\u4e0e C \u5b57\u7b26\u4e32\u4e0d\u540c\u7684\u662f\uff0cPython \u5b57\u7b26\u4e32\u4e0d\u80fd\u88ab\u6539\u53d8\u3002\u5411\u4e00\u4e2a\u7d22\u5f15\u4f4d\u7f6e\u8d4b\u503c\uff0c\u6bd4\u5982 word[0] = ‘m’<\/strong> \u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n
\n
- 1\u3001\u53cd\u659c\u6760\u53ef\u4ee5\u7528\u6765\u8f6c\u4e49\uff0c\u4f7f\u7528r\u53ef\u4ee5\u8ba9\u53cd\u659c\u6760\u4e0d\u53d1\u751f\u8f6c\u4e49\u3002<\/li>\n\n\n\n
- 2\u3001\u5b57\u7b26\u4e32\u53ef\u4ee5\u7528+\u8fd0\u7b97\u7b26\u8fde\u63a5\u5728\u4e00\u8d77\uff0c\u7528*\u8fd0\u7b97\u7b26\u91cd\u590d\u3002<\/li>\n\n\n\n
- 3\u3001Python\u4e2d\u7684\u5b57\u7b26\u4e32\u6709\u4e24\u79cd\u7d22\u5f15\u65b9\u5f0f\uff0c\u4ece\u5de6\u5f80\u53f3\u4ee50\u5f00\u59cb\uff0c\u4ece\u53f3\u5f80\u5de6\u4ee5-1\u5f00\u59cb\u3002<\/li>\n\n\n\n
- 4\u3001Python\u4e2d\u7684\u5b57\u7b26\u4e32\u4e0d\u80fd\u6539\u53d8\u3002<\/li>\n<\/ul>\n\n\n\n
\n\n\n\nbool\uff08\u5e03\u5c14\u7c7b\u578b\uff09<\/h2>\n\n\n\n
\u5e03\u5c14\u7c7b\u578b\u5373 True \u6216 False\u3002<\/p>\n\n\n\n
\u5728 Python \u4e2d\uff0cTrue \u548c False \u90fd\u662f\u5173\u952e\u5b57\uff0c\u8868\u793a\u5e03\u5c14\u503c\u3002<\/p>\n\n\n\n
\u5e03\u5c14\u7c7b\u578b\u53ef\u4ee5\u7528\u6765\u63a7\u5236\u7a0b\u5e8f\u7684\u6d41\u7a0b\uff0c\u6bd4\u5982\u5224\u65ad\u67d0\u4e2a\u6761\u4ef6\u662f\u5426\u6210\u7acb\uff0c\u6216\u8005\u5728\u67d0\u4e2a\u6761\u4ef6\u6ee1\u8db3\u65f6\u6267\u884c\u67d0\u6bb5\u4ee3\u7801\u3002<\/p>\n\n\n\n
\u5e03\u5c14\u7c7b\u578b\u7279\u70b9\uff1a<\/p>\n\n\n\n
\n
- \u5e03\u5c14\u7c7b\u578b\u53ea\u6709\u4e24\u4e2a\u503c\uff1aTrue \u548c False\u3002<\/li>\n\n\n\n
- bool \u662f int \u7684\u5b50\u7c7b\uff0c\u56e0\u6b64\u5e03\u5c14\u503c\u53ef\u4ee5\u88ab\u770b\u4f5c\u6574\u6570\u6765\u4f7f\u7528\uff0c\u5176\u4e2d True \u7b49\u4ef7\u4e8e 1\u3002<\/li>\n\n\n\n
- \u5e03\u5c14\u7c7b\u578b\u53ef\u4ee5\u548c\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u8fdb\u884c\u6bd4\u8f83\uff0c\u6bd4\u5982\u6570\u5b57\u3001\u5b57\u7b26\u4e32\u7b49\u3002\u5728\u6bd4\u8f83\u65f6\uff0cPython \u4f1a\u5c06 True \u89c6\u4e3a 1\uff0cFalse \u89c6\u4e3a 0\u3002<\/li>\n\n\n\n
- \u5e03\u5c14\u7c7b\u578b\u53ef\u4ee5\u548c\u903b\u8f91\u8fd0\u7b97\u7b26\u4e00\u8d77\u4f7f\u7528\uff0c\u5305\u62ec and\u3001or \u548c not\u3002\u8fd9\u4e9b\u8fd0\u7b97\u7b26\u53ef\u4ee5\u7528\u6765\u7ec4\u5408\u591a\u4e2a\u5e03\u5c14\u8868\u8fbe\u5f0f\uff0c\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u5e03\u5c14\u503c\u3002<\/li>\n\n\n\n
- \u5e03\u5c14\u7c7b\u578b\u4e5f\u53ef\u4ee5\u88ab\u8f6c\u6362\u6210\u5176\u4ed6\u6570\u636e\u7c7b\u578b\uff0c\u6bd4\u5982\u6574\u6570\u3001\u6d6e\u70b9\u6570\u548c\u5b57\u7b26\u4e32\u3002\u5728\u8f6c\u6362\u65f6\uff0cTrue \u4f1a\u88ab\u8f6c\u6362\u6210 1\uff0cFalse \u4f1a\u88ab\u8f6c\u6362\u6210 0\u3002<\/li>\n\n\n\n
- \u53ef\u4ee5\u4f7f\u7528\u00a0
bool()<\/code>\u00a0\u51fd\u6570\u5c06\u5176\u4ed6\u7c7b\u578b\u7684\u503c\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u3002\u4ee5\u4e0b\u503c\u5728\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u65f6\u4e3a\u00a0False<\/code>\uff1aNone<\/code>\u3001False<\/code>\u3001\u96f6 (0<\/code>\u30010.0<\/code>\u30010j<\/code>)\u3001\u7a7a\u5e8f\u5217\uff08\u5982\u00a0''<\/code>\u3001()<\/code>\u3001[]<\/code>\uff09\u548c\u7a7a\u6620\u5c04\uff08\u5982\u00a0{}<\/code>\uff09\u3002\u5176\u4ed6\u6240\u6709\u503c\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c\u65f6\u5747\u4e3a\u00a0True<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n\u5b9e\u4f8b<\/h2>\n\n\n\n
# \u5e03\u5c14\u7c7b\u578b\u7684\u503c\u548c\u7c7b\u578b
a = True
b = False
print<\/strong>(type(a)) # <class ‘bool’>
print<\/strong>(type(b)) # <class ‘bool’><\/p>\n\n\n\n# \u5e03\u5c14\u7c7b\u578b\u7684\u6574\u6570\u8868\u73b0
print<\/strong>(int(True)) # 1
print<\/strong>(int(False)) # 0<\/p>\n\n\n\n# \u4f7f\u7528 bool() \u51fd\u6570\u8fdb\u884c\u8f6c\u6362
print<\/strong>(bool(0)) # False
print<\/strong>(bool(42)) # True
print<\/strong>(bool(”)) # False
print<\/strong>(bool(‘Python’)) # True
print<\/strong>(bool([])) # False
print<\/strong>(bool([1, 2, 3])) # True<\/p>\n\n\n\n# \u5e03\u5c14\u903b\u8f91\u8fd0\u7b97
print<\/strong>(True and<\/strong> False) # False
print<\/strong>(True or<\/strong> False) # True
print<\/strong>(not<\/strong> True) # False<\/p>\n\n\n\n# \u5e03\u5c14\u6bd4\u8f83\u8fd0\u7b97
print<\/strong>(5 > 3) # True
print<\/strong>(2 == 2) # True
print<\/strong>(7 < 4) # False<\/p>\n\n\n\n# \u5e03\u5c14\u503c\u5728\u63a7\u5236\u6d41\u4e2d\u7684\u5e94\u7528
if<\/strong> True:
print<\/strong>(“This will always print”)
if<\/strong> not<\/strong> False:
print<\/strong>(“This will also always print”)
x = 10
if<\/strong> x:
print<\/strong>(“x is non-zero and thus True in a boolean context”)<\/p>\n\n\n\n\u6ce8\u610f:<\/strong> \u5728 Python \u4e2d\uff0c\u6240\u6709\u975e\u96f6\u7684\u6570\u5b57\u548c\u975e\u7a7a\u7684\u5b57\u7b26\u4e32\u3001\u5217\u8868\u3001\u5143\u7ec4\u7b49\u6570\u636e\u7c7b\u578b\u90fd\u88ab\u89c6\u4e3a True\uff0c\u53ea\u6709 0\u3001\u7a7a\u5b57\u7b26\u4e32\u3001\u7a7a\u5217\u8868\u3001\u7a7a\u5143\u7ec4<\/strong>\u7b49\u88ab\u89c6\u4e3a False\u3002\u56e0\u6b64\uff0c\u5728\u8fdb\u884c\u5e03\u5c14\u7c7b\u578b\u8f6c\u6362\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u6570\u636e\u7c7b\u578b\u7684\u771f\u5047\u6027\u3002<\/p>\n\n\n\n
\n\n\n\nList\uff08\u5217\u8868\uff09<\/h2>\n\n\n\n
List\uff08\u5217\u8868\uff09 \u662f Python \u4e2d\u4f7f\u7528\u6700\u9891\u7e41\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n\n\n\n
\u5217\u8868\u53ef\u4ee5\u5b8c\u6210\u5927\u591a\u6570\u96c6\u5408\u7c7b\u7684\u6570\u636e\u7ed3\u6784\u5b9e\u73b0\u3002\u5217\u8868\u4e2d\u5143\u7d20\u7684\u7c7b\u578b\u53ef\u4ee5\u4e0d\u76f8\u540c\uff0c\u5b83\u652f\u6301\u6570\u5b57\uff0c\u5b57\u7b26\u4e32\u751a\u81f3\u53ef\u4ee5\u5305\u542b\u5217\u8868\uff08\u6240\u8c13\u5d4c\u5957\uff09\u3002<\/p>\n\n\n\n
\u5217\u8868\u662f\u5199\u5728\u65b9\u62ec\u53f7 []<\/strong> \u4e4b\u95f4\u3001\u7528\u9017\u53f7\u5206\u9694\u5f00\u7684\u5143\u7d20\u5217\u8868\u3002<\/p>\n\n\n\n
\u548c\u5b57\u7b26\u4e32\u4e00\u6837\uff0c\u5217\u8868\u540c\u6837\u53ef\u4ee5\u88ab\u7d22\u5f15\u548c\u622a\u53d6\uff0c\u5217\u8868\u88ab\u622a\u53d6\u540e\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u6240\u9700\u5143\u7d20\u7684\u65b0\u5217\u8868\u3002<\/p>\n\n\n\n
\u5217\u8868\u622a\u53d6\u7684\u8bed\u6cd5\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\u53d8\u91cf[\u5934\u4e0b\u6807:\u5c3e\u4e0b\u6807]<\/pre>\n\n\n\n\u7d22\u5f15\u503c\u4ee5 0<\/strong> \u4e3a\u5f00\u59cb\u503c\uff0c-1<\/strong> \u4e3a\u4ece\u672b\u5c3e\u7684\u5f00\u59cb\u4f4d\u7f6e\u3002<\/p>\n\n\n\n
<\/figure>\n\n\n\n
\u52a0\u53f7 +<\/strong> \u662f\u5217\u8868\u8fde\u63a5\u8fd0\u7b97\u7b26\uff0c\u661f\u53f7 *<\/strong> \u662f\u91cd\u590d\u64cd\u4f5c\u3002\u5982\u4e0b\u5b9e\u4f8b\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
#!\/usr\/bin\/python3<\/p>\n\n\n\n
list = [ ‘abcd’, 786 , 2.23, ‘runoob’, 70.2 ] # \u5b9a\u4e49\u4e00\u4e2a\u5217\u8868
tinylist = [123, ‘runoob’]<\/p>\n\n\n\nprint<\/strong> (list) # \u6253\u5370\u6574\u4e2a\u5217\u8868
print<\/strong> (list[0]) # \u6253\u5370\u5217\u8868\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20
print<\/strong> (list[1:3]) # \u6253\u5370\u5217\u8868\u7b2c\u4e8c\u5230\u7b2c\u56db\u4e2a\u5143\u7d20\uff08\u4e0d\u5305\u542b\u7b2c\u56db\u4e2a\u5143\u7d20\uff09
print<\/strong> (list[2:]) # \u6253\u5370\u5217\u8868\u4ece\u7b2c\u4e09\u4e2a\u5143\u7d20\u5f00\u59cb\u5230\u672b\u5c3e
print<\/strong> (tinylist * 2) # \u6253\u5370tinylist\u5217\u8868\u4e24\u6b21
print<\/strong> (list + tinylist) # \u6253\u5370\u4e24\u4e2a\u5217\u8868\u62fc\u63a5\u5728\u4e00\u8d77\u7684\u7ed3\u679c<\/p>\n\n\n\n\u4ee5\u4e0a\u5b9e\u4f8b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n
['abcd', 786, 2.23, 'runoob', 70.2]\nabcd\n[786, 2.23]\n[2.23, 'runoob', 70.2]\n[123, 'runoob', 123, 'runoob']\n['abcd', 786, 2.23, 'runoob', 70.2, 123, 'runoob']<\/pre>\n\n\n\n\u4e0ePython\u5b57\u7b26\u4e32\u4e0d\u4e00\u6837\u7684\u662f\uff0c\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u53ef\u4ee5\u6539\u53d8\u7684\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> a = [1, 2, 3, 4, 5, 6]
>>> a[0] = 9
>>> a[2:5] = [13, 14, 15]
>>> a
[9, 2, 13, 14, 15, 6]
>>> a[2:5] = [] # \u5c06\u5bf9\u5e94\u7684\u5143\u7d20\u503c\u8bbe\u7f6e\u4e3a []
>>> a
[9, 2, 6]<\/p>\n\n\n\nList \u5185\u7f6e\u4e86\u6709\u5f88\u591a\u65b9\u6cd5\uff0c\u4f8b\u5982 append()\u3001pop() \u7b49\u7b49\uff0c\u8fd9\u5728\u540e\u9762\u4f1a\u8bb2\u5230\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n
\n
- 1\u3001\u5217\u8868\u5199\u5728\u65b9\u62ec\u53f7\u4e4b\u95f4\uff0c\u5143\u7d20\u7528\u9017\u53f7\u9694\u5f00\u3002<\/li>\n\n\n\n
- 2\u3001\u548c\u5b57\u7b26\u4e32\u4e00\u6837\uff0c\u5217\u8868\u53ef\u4ee5\u88ab\u7d22\u5f15\u548c\u5207\u7247\u3002<\/li>\n\n\n\n
- 3\u3001\u5217\u8868\u53ef\u4ee5\u4f7f\u7528\u00a0+<\/strong>\u00a0\u64cd\u4f5c\u7b26\u8fdb\u884c\u62fc\u63a5\u3002<\/li>\n\n\n\n
- 4\u3001\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u53ef\u4ee5\u6539\u53d8\u7684\u3002<\/li>\n<\/ul>\n\n\n\n
Python \u5217\u8868\u622a\u53d6\u53ef\u4ee5\u63a5\u6536\u7b2c\u4e09\u4e2a\u53c2\u6570\uff0c\u53c2\u6570\u4f5c\u7528\u662f\u622a\u53d6\u7684\u6b65\u957f\uff0c\u4ee5\u4e0b\u5b9e\u4f8b\u5728\u7d22\u5f15 1 \u5230\u7d22\u5f15 4 \u7684\u4f4d\u7f6e\u5e76\u8bbe\u7f6e\u4e3a\u6b65\u957f\u4e3a 2\uff08\u95f4\u9694\u4e00\u4e2a\u4f4d\u7f6e\uff09\u6765\u622a\u53d6\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n
<\/figure>\n\n\n\n
\u5982\u679c\u7b2c\u4e09\u4e2a\u53c2\u6570\u4e3a\u8d1f\u6570\u8868\u793a\u9006\u5411\u8bfb\u53d6\uff0c\u4ee5\u4e0b\u5b9e\u4f8b\u7528\u4e8e\u7ffb\u8f6c\u5b57\u7b26\u4e32\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
def<\/strong> reverseWords(input):
# \u901a\u8fc7\u7a7a\u683c\u5c06\u5b57\u7b26\u4e32\u5206\u9694\u7b26\uff0c\u628a\u5404\u4e2a\u5355\u8bcd\u5206\u9694\u4e3a\u5217\u8868
inputWords = input.split(” “)
# \u7ffb\u8f6c\u5b57\u7b26\u4e32
# \u5047\u8bbe\u5217\u8868 list = [1,2,3,4],
# list[0]=1, list[1]=2 \uff0c\u800c -1 \u8868\u793a\u6700\u540e\u4e00\u4e2a\u5143\u7d20 list[-1]=4 ( \u4e0e list[3]=4 \u4e00\u6837)
# inputWords[-1::-1] \u6709\u4e09\u4e2a\u53c2\u6570
# \u7b2c\u4e00\u4e2a\u53c2\u6570 -1 \u8868\u793a\u6700\u540e\u4e00\u4e2a\u5143\u7d20
# \u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e3a\u7a7a\uff0c\u8868\u793a\u79fb\u52a8\u5230\u5217\u8868\u672b\u5c3e
# \u7b2c\u4e09\u4e2a\u53c2\u6570\u4e3a\u6b65\u957f\uff0c-1 \u8868\u793a\u9006\u5411
inputWords=inputWords[-1::-1]
# \u91cd\u65b0\u7ec4\u5408\u5b57\u7b26\u4e32
output = ‘ ‘.join(inputWords)
return<\/strong> output
if<\/strong> __name__ == “__main__”:
input = ‘I like runoob’
rw = reverseWords(input)
print<\/strong>(rw)<\/p>\n\n\n\n\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n\n\n\n
runoob like I<\/pre>\n\n\n\n
\n\n\n\nTuple\uff08\u5143\u7ec4\uff09<\/h2>\n\n\n\n
\u5143\u7ec4\uff08tuple\uff09\u4e0e\u5217\u8868\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u5143\u7ec4\u7684\u5143\u7d20\u4e0d\u80fd\u4fee\u6539\u3002\u5143\u7ec4\u5199\u5728\u5c0f\u62ec\u53f7 ()<\/strong> \u91cc\uff0c\u5143\u7d20\u4e4b\u95f4\u7528\u9017\u53f7\u9694\u5f00\u3002<\/p>\n\n\n\n
\u5143\u7ec4\u4e2d\u7684\u5143\u7d20\u7c7b\u578b\u4e5f\u53ef\u4ee5\u4e0d\u76f8\u540c\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
#!\/usr\/bin\/python3<\/p>\n\n\n\n
tuple = ( ‘abcd’, 786 , 2.23, ‘runoob’, 70.2 )
tinytuple = (123, ‘runoob’)<\/p>\n\n\n\nprint<\/strong> (tuple) # \u8f93\u51fa\u5b8c\u6574\u5143\u7ec4
print<\/strong> (tuple[0]) # \u8f93\u51fa\u5143\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20
print<\/strong> (tuple[1:3]) # \u8f93\u51fa\u4ece\u7b2c\u4e8c\u4e2a\u5143\u7d20\u5f00\u59cb\u5230\u7b2c\u4e09\u4e2a\u5143\u7d20
print<\/strong> (tuple[2:]) # \u8f93\u51fa\u4ece\u7b2c\u4e09\u4e2a\u5143\u7d20\u5f00\u59cb\u7684\u6240\u6709\u5143\u7d20
print<\/strong> (tinytuple * 2) # \u8f93\u51fa\u4e24\u6b21\u5143\u7ec4
print<\/strong> (tuple + tinytuple) # \u8fde\u63a5\u5143\u7ec4<\/p>\n\n\n\n\u4ee5\u4e0a\u5b9e\u4f8b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n
('abcd', 786, 2.23, 'runoob', 70.2)\nabcd\n(786, 2.23)\n(2.23, 'runoob', 70.2)\n(123, 'runoob', 123, 'runoob')\n('abcd', 786, 2.23, 'runoob', 70.2, 123, 'runoob')<\/pre>\n\n\n\n\u5143\u7ec4\u4e0e\u5b57\u7b26\u4e32\u7c7b\u4f3c\uff0c\u53ef\u4ee5\u88ab\u7d22\u5f15\u4e14\u4e0b\u6807\u7d22\u5f15\u4ece0\u5f00\u59cb\uff0c-1 \u4e3a\u4ece\u672b\u5c3e\u5f00\u59cb\u7684\u4f4d\u7f6e\u3002\u4e5f\u53ef\u4ee5\u8fdb\u884c\u622a\u53d6\uff08\u770b\u4e0a\u9762\uff0c\u8fd9\u91cc\u4e0d\u518d\u8d58\u8ff0\uff09\u3002<\/p>\n\n\n\n
\u5176\u5b9e\uff0c\u53ef\u4ee5\u628a\u5b57\u7b26\u4e32\u770b\u4f5c\u4e00\u79cd\u7279\u6b8a\u7684\u5143\u7ec4\u3002<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> tup = (1, 2, 3, 4, 5, 6)
>>> print<\/strong>(tup[0])
1
>>> print<\/strong>(tup[1:5])
(2, 3, 4, 5)
>>> tup[0] = 11 # \u4fee\u6539\u5143\u7ec4\u5143\u7d20\u7684\u64cd\u4f5c\u662f\u975e\u6cd5\u7684
Traceback (most recent call last):
File “<stdin>”, line 1, in<\/strong> <module>
TypeError: ‘tuple’ object does not<\/strong> support item assignment
>>><\/p>\n\n\n\n\u867d\u7136tuple\u7684\u5143\u7d20\u4e0d\u53ef\u6539\u53d8\uff0c\u4f46\u5b83\u53ef\u4ee5\u5305\u542b\u53ef\u53d8\u7684\u5bf9\u8c61\uff0c\u6bd4\u5982list\u5217\u8868\u3002<\/p>\n\n\n\n
\u6784\u9020\u5305\u542b 0 \u4e2a\u6216 1 \u4e2a\u5143\u7d20\u7684\u5143\u7ec4\u6bd4\u8f83\u7279\u6b8a\uff0c\u6240\u4ee5\u6709\u4e00\u4e9b\u989d\u5916\u7684\u8bed\u6cd5\u89c4\u5219\uff1a<\/p>\n\n\n\n
tup1 = () # \u7a7a\u5143\u7ec4\ntup2 = (20,) # \u4e00\u4e2a\u5143\u7d20\uff0c\u9700\u8981\u5728\u5143\u7d20\u540e\u6dfb\u52a0\u9017\u53f7<\/pre>\n\n\n\n\u5982\u679c\u4f60\u60f3\u521b\u5efa\u53ea\u6709\u4e00\u4e2a\u5143\u7d20\u7684\u5143\u7ec4\uff0c\u9700\u8981\u6ce8\u610f\u5728\u5143\u7d20\u540e\u9762\u6dfb\u52a0\u4e00\u4e2a\u9017\u53f7\uff0c\u4ee5\u533a\u5206\u5b83\u662f\u4e00\u4e2a\u5143\u7ec4\u800c\u4e0d\u662f\u4e00\u4e2a\u666e\u901a\u7684\u503c\uff0c\u8fd9\u662f\u56e0\u4e3a\u5728\u6ca1\u6709\u9017\u53f7\u7684\u60c5\u51b5\u4e0b\uff0cPython\u4f1a\u5c06\u62ec\u53f7\u89e3\u91ca\u4e3a\u6570\u5b66\u8fd0\u7b97\u4e2d\u7684\u62ec\u53f7\uff0c\u800c\u4e0d\u662f\u5143\u7ec4\u7684\u8868\u793a\u3002<\/p>\n\n\n\n
\u5982\u679c\u4e0d\u6dfb\u52a0\u9017\u53f7\uff0c\u5982\u4e0b\u6240\u793a\uff0c\u5b83\u5c06\u88ab\u89e3\u91ca\u4e3a\u4e00\u4e2a\u666e\u901a\u7684\u503c\u800c\u4e0d\u662f\u5143\u7ec4\uff1a<\/p>\n\n\n\n
not_a_tuple = (42)<\/pre>\n\n\n\n\u8fd9\u6837\u7684\u8bdd\uff0cnot_a_tuple \u5c06\u662f\u6574\u6570\u7c7b\u578b\u800c\u4e0d\u662f\u5143\u7ec4\u7c7b\u578b\u3002<\/p>\n\n\n\n
string\u3001list \u548c tuple \u90fd\u5c5e\u4e8e sequence\uff08\u5e8f\u5217\uff09\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n\n\n\n
\n
- 1\u3001\u4e0e\u5b57\u7b26\u4e32\u4e00\u6837\uff0c\u5143\u7ec4\u7684\u5143\u7d20\u4e0d\u80fd\u4fee\u6539\u3002<\/li>\n\n\n\n
- 2\u3001\u5143\u7ec4\u4e5f\u53ef\u4ee5\u88ab\u7d22\u5f15\u548c\u5207\u7247\uff0c\u65b9\u6cd5\u4e00\u6837\u3002<\/li>\n\n\n\n
- 3\u3001\u6ce8\u610f\u6784\u9020\u5305\u542b 0 \u6216 1 \u4e2a\u5143\u7d20\u7684\u5143\u7ec4\u7684\u7279\u6b8a\u8bed\u6cd5\u89c4\u5219\u3002<\/li>\n\n\n\n
- 4\u3001\u5143\u7ec4\u4e5f\u53ef\u4ee5\u4f7f\u7528\u00a0+<\/strong>\u00a0\u64cd\u4f5c\u7b26\u8fdb\u884c\u62fc\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n
\n\n\n\nSet\uff08\u96c6\u5408\uff09<\/h2>\n\n\n\n
Python \u4e2d\u7684\u96c6\u5408\uff08Set\uff09\u662f\u4e00\u79cd\u65e0\u5e8f\u3001\u53ef\u53d8\u7684\u6570\u636e\u7c7b\u578b\uff0c\u7528\u4e8e\u5b58\u50a8\u552f\u4e00\u7684\u5143\u7d20\u3002<\/p>\n\n\n\n
\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u4e0d\u4f1a\u91cd\u590d\uff0c\u5e76\u4e14\u53ef\u4ee5\u8fdb\u884c\u4ea4\u96c6\u3001\u5e76\u96c6\u3001\u5dee\u96c6\u7b49\u5e38\u89c1\u7684\u96c6\u5408\u64cd\u4f5c\u3002<\/p>\n\n\n\n
\u5728 Python \u4e2d\uff0c\u96c6\u5408\u4f7f\u7528\u5927\u62ec\u53f7 {}<\/strong> \u8868\u793a\uff0c\u5143\u7d20\u4e4b\u95f4\u7528\u9017\u53f7 ,<\/strong> \u5206\u9694\u3002<\/p>\n\n\n\n
\u53e6\u5916\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528 set()<\/strong> \u51fd\u6570\u521b\u5efa\u96c6\u5408\u3002<\/p>\n\n\n\n
\u6ce8\u610f\uff1a<\/strong>\u521b\u5efa\u4e00\u4e2a\u7a7a\u96c6\u5408\u5fc5\u987b\u7528 set()<\/strong> \u800c\u4e0d\u662f { }<\/strong>\uff0c\u56e0\u4e3a { }<\/strong> \u662f\u7528\u6765\u521b\u5efa\u4e00\u4e2a\u7a7a\u5b57\u5178\u3002<\/p>\n\n\n\n
\u521b\u5efa\u683c\u5f0f\uff1a<\/p>\n\n\n\n
parame = {value01,value02,...}\n\u6216\u8005\nset(value)<\/pre>\n\n\n\n\u5b9e\u4f8b<\/h2>\n\n\n\n
#!\/usr\/bin\/python3<\/p>\n\n\n\n
sites = {‘Google’, ‘Taobao’, ‘Runoob’, ‘Facebook’, ‘Zhihu’, ‘Baidu’}<\/p>\n\n\n\n
print<\/strong>(sites) # \u8f93\u51fa\u96c6\u5408\uff0c\u91cd\u590d\u7684\u5143\u7d20\u88ab\u81ea\u52a8\u53bb\u6389<\/p>\n\n\n\n
# \u6210\u5458\u6d4b\u8bd5
if<\/strong> ‘Runoob’ in<\/strong> sites :
print<\/strong>(‘Runoob \u5728\u96c6\u5408\u4e2d’)
else<\/strong> :
print<\/strong>(‘Runoob \u4e0d\u5728\u96c6\u5408\u4e2d’)<\/p>\n\n\n\n# set\u53ef\u4ee5\u8fdb\u884c\u96c6\u5408\u8fd0\u7b97
a = set(‘abracadabra’)
b = set(‘alacazam’)<\/p>\n\n\n\nprint<\/strong>(a)<\/p>\n\n\n\n
print<\/strong>(a – b) # a \u548c b \u7684\u5dee\u96c6<\/p>\n\n\n\n
print<\/strong>(a | b) # a \u548c b \u7684\u5e76\u96c6<\/p>\n\n\n\n
print<\/strong>(a & b) # a \u548c b \u7684\u4ea4\u96c6<\/p>\n\n\n\n
print<\/strong>(a ^ b) # a \u548c b \u4e2d\u4e0d\u540c\u65f6\u5b58\u5728\u7684\u5143\u7d20<\/p>\n\n\n\n
\u4ee5\u4e0a\u5b9e\u4f8b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n
{'Zhihu', 'Baidu', 'Taobao', 'Runoob', 'Google', 'Facebook'}\nRunoob \u5728\u96c6\u5408\u4e2d\n{'b', 'c', 'a', 'r', 'd'}\n{'r', 'b', 'd'}\n{'b', 'c', 'a', 'z', 'm', 'r', 'l', 'd'}\n{'c', 'a'}\n{'z', 'b', 'm', 'r', 'l', 'd'}<\/pre>\n\n\n\n
\n\n\n\nDictionary\uff08\u5b57\u5178\uff09<\/h2>\n\n\n\n
\u5b57\u5178\uff08dictionary\uff09\u662fPython\u4e2d\u53e6\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u5185\u7f6e\u6570\u636e\u7c7b\u578b\u3002<\/p>\n\n\n\n
\u5217\u8868\u662f\u6709\u5e8f\u7684\u5bf9\u8c61\u96c6\u5408\uff0c\u5b57\u5178\u662f\u65e0\u5e8f\u7684\u5bf9\u8c61\u96c6\u5408\u3002\u4e24\u8005\u4e4b\u95f4\u7684\u533a\u522b\u5728\u4e8e\uff1a\u5b57\u5178\u5f53\u4e2d\u7684\u5143\u7d20\u662f\u901a\u8fc7\u952e\u6765\u5b58\u53d6\u7684\uff0c\u800c\u4e0d\u662f\u901a\u8fc7\u504f\u79fb\u5b58\u53d6\u3002<\/p>\n\n\n\n
\u5b57\u5178\u662f\u4e00\u79cd\u6620\u5c04\u7c7b\u578b\uff0c\u5b57\u5178\u7528 { }<\/strong> \u6807\u8bc6\uff0c\u5b83\u662f\u4e00\u4e2a\u65e0\u5e8f\u7684 \u952e(key) : \u503c(value)<\/strong> \u7684\u96c6\u5408\u3002<\/p>\n\n\n\n
\u952e(key)\u5fc5\u987b\u4f7f\u7528\u4e0d\u53ef\u53d8\u7c7b\u578b\u3002<\/p>\n\n\n\n
\u5728\u540c\u4e00\u4e2a\u5b57\u5178\u4e2d\uff0c\u952e(key)\u5fc5\u987b\u662f\u552f\u4e00\u7684\u3002<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
#!\/usr\/bin\/python3<\/p>\n\n\n\n
dict = {}
dict[‘one’] = “1 – \u83dc\u9e1f\u6559\u7a0b”
dict[2] = “2 – \u83dc\u9e1f\u5de5\u5177”<\/p>\n\n\n\ntinydict = {‘name’: ‘runoob’,’code’:1, ‘site’: ‘www.runoob.com’}<\/p>\n\n\n\n
print<\/strong> (dict[‘one’]) # \u8f93\u51fa\u952e\u4e3a ‘one’ \u7684\u503c
print<\/strong> (dict[2]) # \u8f93\u51fa\u952e\u4e3a 2 \u7684\u503c
print<\/strong> (tinydict) # \u8f93\u51fa\u5b8c\u6574\u7684\u5b57\u5178
print<\/strong> (tinydict.keys()) # \u8f93\u51fa\u6240\u6709\u952e
print<\/strong> (tinydict.values()) # \u8f93\u51fa\u6240\u6709\u503c<\/p>\n\n\n\n\u4ee5\u4e0a\u5b9e\u4f8b\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n
1 - \u83dc\u9e1f\u6559\u7a0b\n2 - \u83dc\u9e1f\u5de5\u5177\n{'name': 'runoob', 'code': 1, 'site': 'www.runoob.com'}\ndict_keys(['name', 'code', 'site'])\ndict_values(['runoob', 1, 'www.runoob.com'])<\/pre>\n\n\n\n\u6784\u9020\u51fd\u6570 dict() \u53ef\u4ee5\u76f4\u63a5\u4ece\u952e\u503c\u5bf9\u5e8f\u5217\u4e2d\u6784\u5efa\u5b57\u5178\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\u5b9e\u4f8b<\/h2>\n\n\n\n
>>> dict([(‘Runoob’, 1), (‘Google’, 2), (‘Taobao’, 3)])
{‘Runoob’: 1, ‘Google’: 2, ‘Taobao’: 3}
>>> {x: x**2 for<\/strong> x in<\/strong> (2, 4, 6)}
{2: 4, 4: 16, 6: 36}
>>> dict(Runoob=1, Google=2, Taobao=3)
{‘Runoob’: 1, ‘Google’: 2, ‘Taobao’: 3}<\/p>\n\n\n\n