{"id":1035764,"date":"2024-12-31T12:01:34","date_gmt":"2024-12-31T04:01:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1035764.html"},"modified":"2024-12-31T12:01:36","modified_gmt":"2024-12-31T04:01:36","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e8%b0%83%e7%94%a8%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1035764.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u8c03\u7528\u5b57\u7b26\u4e32"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u8c03\u7528\u5b57\u7b26\u4e32\"<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u8c03\u7528\u5b57\u7b26\u4e32\u3001\u5b57\u7b26\u4e32\u53ef\u4ee5\u901a\u8fc7\u5f15\u53f7\u3001\u7d22\u5f15\u3001\u5207\u7247\u7b49\u65b9\u5f0f\u8fdb\u884c\u8c03\u7528<\/strong>\u3002\u5b57\u7b26\u4e32\u5728Python\u4e2d\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u4ee5\u901a\u8fc7\u5404\u79cd\u65b9\u5f0f\u8fdb\u884c\u64cd\u4f5c\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecdPython\u4e2d\u8c03\u7528\u5b57\u7b26\u4e32\u7684\u4e0d\u540c\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u5b57\u7b26\u4e32\u7684\u5b9a\u4e49<\/h2>\n<\/p>\n

\u5728Python\u4e2d\uff0c\u5b57\u7b26\u4e32\u662f\u7531\u4e00\u5bf9\u5355\u5f15\u53f7\uff08'\uff09\u6216\u53cc\u5f15\u53f7\uff08"\uff09\u62ec\u8d77\u6765\u7684\u5b57\u7b26\u5e8f\u5217\u3002\u53ef\u4ee5\u901a\u8fc7\u8d4b\u503c\u64cd\u4f5c\u5c06\u5b57\u7b26\u4e32\u8d4b\u7ed9\u53d8\u91cf\uff0c\u7136\u540e\u5bf9\u5176\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n<\/p>\n

string1 = 'Hello, World!'<\/p>\n
string2 = "Python Programming"<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5b57\u7b26\u4e32\u53ef\u4ee5\u5305\u542b\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u7a7a\u683c\u3001\u6807\u70b9\u7b26\u53f7\u7b49\u5b57\u7b26\u3002Python\u4e2d\u7684\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u4e00\u65e6\u521b\u5efa\uff0c\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u4e0d\u80fd\u88ab\u4fee\u6539\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u5b57\u7b26\u4e32\u7684\u7d22\u5f15<\/h2>\n<\/p>\n
\u5b57\u7b26\u4e32\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\u90fd\u6709\u4e00\u4e2a\u7d22\u5f15\uff0c\u7d22\u5f15\u4ece0\u5f00\u59cb\u3002\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u8bbf\u95ee\u5b57\u7b26\u4e32\u4e2d\u7684\u5355\u4e2a\u5b57\u7b26\u3002\u4f7f\u7528\u65b9\u62ec\u53f7\uff08[]\uff09\u6765\u6307\u5b9a\u7d22\u5f15\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
print(string[0])  # \u8f93\u51fa 'H'<\/p>\n
print(string[7])  # \u8f93\u51fa 'W'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u7d22\u5f15\u4e5f\u53ef\u4ee5\u662f\u8d1f\u6570\uff0c\u8868\u793a\u4ece\u5b57\u7b26\u4e32\u672b\u5c3e\u5f00\u59cb\u8ba1\u6570\uff0c-1\u8868\u793a\u6700\u540e\u4e00\u4e2a\u5b57\u7b26\uff0c-2\u8868\u793a\u5012\u6570\u7b2c\u4e8c\u4e2a\u5b57\u7b26\uff0c\u4f9d\u6b64\u7c7b\u63a8\u3002<\/p>\n<\/p>\n
print(string[-1])  # \u8f93\u51fa '!'<\/p>\n
print(string[-5])  # \u8f93\u51fa 'o'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u5b57\u7b26\u4e32\u7684\u5207\u7247<\/h2>\n<\/p>\n
\u5207\u7247\uff08Slicing\uff09\u662f\u6307\u4ece\u5b57\u7b26\u4e32\u4e2d\u63d0\u53d6\u4e00\u90e8\u5206\u5b50\u5b57\u7b26\u4e32\u3002\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u8fd0\u7b97\u7b26\uff08[:]\uff09\u6765\u5b9e\u73b0\u5207\u7247\u64cd\u4f5c\u3002\u5207\u7247\u7684\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1astring[start:end:step]<\/code>\uff0c\u5176\u4e2dstart<\/code>\u8868\u793a\u8d77\u59cb\u7d22\u5f15\uff0cend<\/code>\u8868\u793a\u7ed3\u675f\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09\uff0cstep<\/code>\u8868\u793a\u6b65\u957f\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
print(string[0:5])  # \u8f93\u51fa 'Hello'<\/p>\n
print(string[7:12]) # \u8f93\u51fa 'World'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5982\u679c\u4e0d\u6307\u5b9astart<\/code>\uff0c\u9ed8\u8ba4\u4ece0\u5f00\u59cb\uff1b\u5982\u679c\u4e0d\u6307\u5b9aend<\/code>\uff0c\u9ed8\u8ba4\u5230\u5b57\u7b26\u4e32\u672b\u5c3e\uff1b\u5982\u679c\u4e0d\u6307\u5b9astep<\/code>\uff0c\u9ed8\u8ba4\u6b65\u957f\u4e3a1\u3002<\/p>\n<\/p>\n
print(string[:5])   # \u8f93\u51fa 'Hello'<\/p>\n
print(string[7:])   # \u8f93\u51fa 'World!'<\/p>\n
print(string[::2])  # \u8f93\u51fa 'Hlo ol!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u5b57\u7b26\u4e32\u7684\u62fc\u63a5<\/h2>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u52a0\u53f7\uff08+\uff09\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u4e32\u62fc\u63a5\u5728\u4e00\u8d77\uff0c\u5f62\u6210\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
string1 = "Hello"<\/p>\n
string2 = ", World!"<\/p>\n
string3 = string1 + string2<\/p>\n
print(string3)  # \u8f93\u51fa 'Hello, World!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4e58\u53f7\uff08*\uff09\u5c06\u5b57\u7b26\u4e32\u91cd\u590d\u591a\u6b21\u3002<\/p>\n<\/p>\n
string = "Hello"<\/p>\n
print(string * 3)  # \u8f93\u51fa 'HelloHelloHello'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u5b57\u7b26\u4e32\u7684\u683c\u5f0f\u5316<\/h2>\n<\/p>\n
\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u662f\u6307\u5c06\u53d8\u91cf\u7684\u503c\u5d4c\u5165\u5230\u5b57\u7b26\u4e32\u4e2d\u3002Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u767e\u5206\u53f7\uff08%\uff09\u683c\u5f0f\u5316\u3001str.format()<\/code>\u65b9\u6cd5\u548cf-\u5b57\u7b26\u4e32\uff08f-string\uff09\u3002<\/p>\n<\/p>\n
1. \u767e\u5206\u53f7\u683c\u5f0f\u5316<\/h3>\n<\/p>\n
\u767e\u5206\u53f7\u683c\u5f0f\u5316\u4f7f\u7528\u767e\u5206\u53f7\uff08%\uff09\u4f5c\u4e3a\u5360\u4f4d\u7b26\uff0c\u5c06\u53d8\u91cf\u7684\u503c\u63d2\u5165\u5230\u5b57\u7b26\u4e32\u4e2d\u3002\u5e38\u89c1\u7684\u5360\u4f4d\u7b26\u6709\uff1a%s\uff08\u5b57\u7b26\u4e32\uff09\u3001%d\uff08\u6574\u6570\uff09\u3001%f\uff08\u6d6e\u70b9\u6570\uff09\u7b49\u3002<\/p>\n<\/p>\n
name = "Alice"<\/p>\n
age = 30<\/p>\n
print("Name: %s, Age: %d" % (name, age))  # \u8f93\u51fa 'Name: Alice, Age: 30'<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. str.format()\u65b9\u6cd5<\/h3>\n<\/p>\n
str.format()<\/code>\u65b9\u6cd5\u4f7f\u7528\u82b1\u62ec\u53f7\uff08{}\uff09\u4f5c\u4e3a\u5360\u4f4d\u7b26\uff0c\u5c06\u53d8\u91cf\u7684\u503c\u63d2\u5165\u5230\u5b57\u7b26\u4e32\u4e2d\u3002\u53ef\u4ee5\u901a\u8fc7\u4f4d\u7f6e\u53c2\u6570\u6216\u5173\u952e\u5b57\u53c2\u6570\u6765\u6307\u5b9a\u53d8\u91cf\u3002<\/p>\n<\/p>\n
name = "Bob"<\/p>\n
age = 25<\/p>\n
print("Name: {}, Age: {}".format(name, age))  # \u8f93\u51fa 'Name: Bob, Age: 25'<\/p>\n
print("Name: {0}, Age: {1}".format(name, age))  # \u8f93\u51fa 'Name: Bob, Age: 25'<\/p>\n
print("Name: {name}, Age: {age}".format(name=name, age=age))  # \u8f93\u51fa 'Name: Bob, Age: 25'<\/p>\n
<\/code><\/pre>\n<\/p>\n
3. f-\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n
f-\u5b57\u7b26\u4e32\uff08f-string\uff09\u662f\u5728Python 3.6\u5f15\u5165\u7684\u4e00\u79cd\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u65b9\u5f0f\u3002\u5728\u5b57\u7b26\u4e32\u524d\u9762\u52a0\u4e0a\u5b57\u6bcdf<\/code>\u6216F<\/code>\uff0c\u7136\u540e\u5728\u5b57\u7b26\u4e32\u4e2d\u4f7f\u7528\u82b1\u62ec\u53f7\uff08{}\uff09\u5305\u542b\u53d8\u91cf\u540d\u6216\u8868\u8fbe\u5f0f\u3002<\/p>\n<\/p>\n
name = "Charlie"<\/p>\n
age = 35<\/p>\n
print(f"Name: {name}, Age: {age}")  # \u8f93\u51fa 'Name: Charlie, Age: 35'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516d\u3001\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5<\/h2>\n<\/p>\n
Python\u7684\u5b57\u7b26\u4e32\u7c7b\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u65b9\u6cd5\uff0c\u7528\u4e8e\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\u3002\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\uff1a<\/p>\n<\/p>\n
1. len()<\/code>\u51fd\u6570<\/h3>\n<\/p>\n
len()<\/code>\u51fd\u6570\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0c\u5373\u5b57\u7b26\u4e32\u4e2d\u5b57\u7b26\u7684\u4e2a\u6570\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
print(len(string))  # \u8f93\u51fa 13<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. lower()<\/code>\u548cupper()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
lower()<\/code>\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u8f6c\u6362\u4e3a\u5c0f\u5199\uff0cupper()<\/code>\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u5b57\u7b26\u8f6c\u6362\u4e3a\u5927\u5199\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
print(string.lower())  # \u8f93\u51fa 'hello, world!'<\/p>\n
print(string.upper())  # \u8f93\u51fa 'HELLO, WORLD!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
3. strip()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
strip()<\/code>\u65b9\u6cd5\u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7a7a\u683c\u6216\u6307\u5b9a\u5b57\u7b26\uff0clstrip()<\/code>\u65b9\u6cd5\u53bb\u9664\u5b57\u7b26\u4e32\u5de6\u4fa7\u7684\u7a7a\u683c\u6216\u6307\u5b9a\u5b57\u7b26\uff0crstrip()<\/code>\u65b9\u6cd5\u53bb\u9664\u5b57\u7b26\u4e32\u53f3\u4fa7\u7684\u7a7a\u683c\u6216\u6307\u5b9a\u5b57\u7b26\u3002<\/p>\n<\/p>\n
string = "   Hello, World!   "<\/p>\n
print(string.strip())  # \u8f93\u51fa 'Hello, World!'<\/p>\n
print(string.lstrip())  # \u8f93\u51fa 'Hello, World!   '<\/p>\n
print(string.rstrip())  # \u8f93\u51fa '   Hello, World!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
4. split()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
split()<\/code>\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u6309\u6307\u5b9a\u7684\u5206\u9694\u7b26\u62c6\u5206\u6210\u4e00\u4e2a\u5217\u8868\uff0c\u9ed8\u8ba4\u6309\u7a7a\u683c\u62c6\u5206\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
print(string.split())  # \u8f93\u51fa ['Hello,', 'World!']<\/p>\n
print(string.split(','))  # \u8f93\u51fa ['Hello', ' World!']<\/p>\n
<\/code><\/pre>\n<\/p>\n
5. join()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
join()<\/code>\u65b9\u6cd5\u5c06\u5217\u8868\u4e2d\u7684\u5b57\u7b26\u4e32\u8fde\u63a5\u6210\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u4f7f\u7528\u6307\u5b9a\u7684\u5206\u9694\u7b26\u3002<\/p>\n<\/p>\n
words = ['Hello', 'World!']<\/p>\n
print(' '.join(words))  # \u8f93\u51fa 'Hello World!'<\/p>\n
print(', '.join(words))  # \u8f93\u51fa 'Hello, World!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
6. find()<\/code>\u548creplace()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
find()<\/code>\u65b9\u6cd5\u8fd4\u56de\u6307\u5b9a\u5b50\u5b57\u7b26\u4e32\u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u9996\u6b21\u51fa\u73b0\u4f4d\u7f6e\uff0c\u5982\u679c\u6ca1\u6709\u627e\u5230\uff0c\u8fd4\u56de-1\u3002replace()<\/code>\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u6307\u5b9a\u5b50\u5b57\u7b26\u4e32\u66ff\u6362\u4e3a\u65b0\u7684\u5b50\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
print(string.find('World'))  # \u8f93\u51fa 7<\/p>\n
print(string.replace('World', 'Python'))  # \u8f93\u51fa 'Hello, Python!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
7. startswith()<\/code>\u548cendswith()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
startswith()<\/code>\u65b9\u6cd5\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u6307\u5b9a\u7684\u524d\u7f00\u5f00\u5934\uff0cendswith()<\/code>\u65b9\u6cd5\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u6307\u5b9a\u7684\u540e\u7f00\u7ed3\u5c3e\uff0c\u8fd4\u56de\u5e03\u5c14\u503c\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
print(string.startswith('Hello'))  # \u8f93\u51fa True<\/p>\n
print(string.endswith('!'))  # \u8f93\u51fa True<\/p>\n
<\/code><\/pre>\n<\/p>\n
8. isalpha()<\/code>\u3001isdigit()<\/code>\u548cisalnum()<\/code>\u65b9\u6cd5<\/h3>\n<\/p>\n
isalpha()<\/code>\u65b9\u6cd5\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u5b57\u6bcd\uff0cisdigit()<\/code>\u65b9\u6cd5\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u6570\u5b57\uff0cisalnum()<\/code>\u65b9\u6cd5\u68c0\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u5305\u542b\u5b57\u6bcd\u548c\u6570\u5b57\u3002<\/p>\n<\/p>\n
string1 = "Hello"<\/p>\n
string2 = "12345"<\/p>\n
string3 = "Hello123"<\/p>\n
print(string1.isalpha())  # \u8f93\u51fa True<\/p>\n
print(string2.isdigit())  # \u8f93\u51fa True<\/p>\n
print(string3.isalnum())  # \u8f93\u51fa True<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e03\u3001\u5b57\u7b26\u4e32\u7684\u7f16\u7801\u548c\u89e3\u7801<\/h2>\n<\/p>\n
\u5b57\u7b26\u4e32\u5728\u8ba1\u7b97\u673a\u4e2d\u662f\u4ee5\u5b57\u8282\u7684\u5f62\u5f0f\u5b58\u50a8\u7684\uff0c\u4e0d\u540c\u7684\u7f16\u7801\u65b9\u5f0f\u4f1a\u5f71\u54cd\u5b57\u7b26\u4e32\u7684\u5b58\u50a8\u548c\u4f20\u8f93\u3002Python\u63d0\u4f9b\u4e86encode()<\/code>\u548cdecode()<\/code>\u65b9\u6cd5\uff0c\u7528\u4e8e\u5728\u5b57\u7b26\u4e32\u548c\u5b57\u8282\u4e4b\u95f4\u8fdb\u884c\u8f6c\u6362\u3002<\/p>\n<\/p>\n
1. \u7f16\u7801<\/h3>\n<\/p>\n
encode()<\/code>\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u7f16\u7801\u4e3a\u5b57\u8282\uff0c\u9ed8\u8ba4\u4f7f\u7528UTF-8\u7f16\u7801\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
encoded_string = string.encode('utf-8')<\/p>\n
print(encoded_string)  # \u8f93\u51fa b'Hello, World!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u89e3\u7801<\/h3>\n<\/p>\n
decode()<\/code>\u65b9\u6cd5\u5c06\u5b57\u8282\u89e3\u7801\u4e3a\u5b57\u7b26\u4e32\uff0c\u9ed8\u8ba4\u4f7f\u7528UTF-8\u89e3\u7801\u3002<\/p>\n<\/p>\n
decoded_string = encoded_string.decode('utf-8')<\/p>\n
print(decoded_string)  # \u8f93\u51fa 'Hello, World!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u516b\u3001\u5b57\u7b26\u4e32\u7684\u5e38\u89c1\u64cd\u4f5c\u793a\u4f8b<\/h2>\n<\/p>\n
1. \u53cd\u8f6c\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u6765\u53cd\u8f6c\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
reversed_string = string[::-1]<\/p>\n
print(reversed_string)  # \u8f93\u51fa '!dlroW ,olleH'<\/p>\n
<\/code><\/pre>\n<\/p>\n
2. \u5224\u65ad\u5b57\u7b26\u4e32\u662f\u5426\u4e3a\u56de\u6587<\/h3>\n<\/p>\n
\u56de\u6587\u662f\u6307\u6b63\u8bfb\u548c\u53cd\u8bfb\u90fd\u76f8\u540c\u7684\u5b57\u7b26\u4e32\u3002\u53ef\u4ee5\u901a\u8fc7\u53cd\u8f6c\u5b57\u7b26\u4e32\u5e76\u4e0e\u539f\u5b57\u7b26\u4e32\u6bd4\u8f83\u6765\u5224\u65ad\u662f\u5426\u4e3a\u56de\u6587\u3002<\/p>\n<\/p>\n
def is_palindrome(string):<\/p>\n
    return string == string[::-1]<\/p>\n
print(is_palindrome("madam"))  # \u8f93\u51fa True<\/p>\n
print(is_palindrome("hello"))  # \u8f93\u51fa False<\/p>\n
<\/code><\/pre>\n<\/p>\n
3. \u7edf\u8ba1\u5b57\u7b26\u4e32\u4e2d\u67d0\u4e2a\u5b57\u7b26\u7684\u51fa\u73b0\u6b21\u6570<\/h3>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684count()<\/code>\u65b9\u6cd5\u6765\u7edf\u8ba1\u67d0\u4e2a\u5b57\u7b26\u5728\u5b57\u7b26\u4e32\u4e2d\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
count = string.count('o')<\/p>\n
print(count)  # \u8f93\u51fa 2<\/p>\n
<\/code><\/pre>\n<\/p>\n
4. \u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u67d0\u4e2a\u5b57\u7b26<\/h3>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()<\/code>\u65b9\u6cd5\u6765\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u67d0\u4e2a\u5b57\u7b26\u3002<\/p>\n<\/p>\n
string = "Hello, World!"<\/p>\n
new_string = string.replace('o', 'a')<\/p>\n
print(new_string)  # \u8f93\u51fa 'Hella, Warld!'<\/p>\n
<\/code><\/pre>\n<\/p>\n
5. \u5206\u5272\u548c\u5408\u5e76\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n
\u53ef\u4ee5\u4f7f\u7528split()<\/code>\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u6309\u6307\u5b9a\u5206\u9694\u7b26\u62c6\u5206\u4e3a\u5217\u8868\uff0c\u7136\u540e\u4f7f\u7528join()<\/code>\u65b9\u6cd5\u5c06\u5217\u8868\u4e2d\u7684\u5b57\u7b26\u4e32\u8fde\u63a5\u6210\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
string = "apple,banana,cherry"<\/p>\n
fruits = string.split(',')<\/p>\n
print(fruits)  # \u8f93\u51fa ['apple', 'banana', 'cherry']<\/p>\n
new_string = '-'.join(fruits)<\/p>\n
print(new_string)  # \u8f93\u51fa 'apple-banana-cherry'<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e5d\u3001\u603b\u7ed3<\/h2>\n<\/p>\n
Python\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\u65b9\u6cd5\uff0c\u4f7f\u5f97\u5b57\u7b26\u4e32\u7684\u8c03\u7528\u548c\u5904\u7406\u53d8\u5f97\u975e\u5e38\u65b9\u4fbf\u3002\u901a\u8fc7\u638c\u63e1\u5b57\u7b26\u4e32\u7684\u7d22\u5f15\u3001\u5207\u7247\u3001\u62fc\u63a5\u3001\u683c\u5f0f\u5316\u3001\u5e38\u7528\u65b9\u6cd5\u4ee5\u53ca\u7f16\u7801\u548c\u89e3\u7801\uff0c\u53ef\u4ee5\u8f7b\u677e\u5e94\u5bf9\u5404\u79cd\u5b57\u7b26\u4e32\u64cd\u4f5c\u9700\u6c42\u3002\u5e0c\u671b\u672c\u6587\u7684\u4ecb\u7ecd\u80fd\u591f\u5e2e\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528Python\u4e2d\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u521b\u5efa\u548c\u4f7f\u7528\u5b57\u7b26\u4e32\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u5b57\u7b26\u4e32\u53ef\u4ee5\u901a\u8fc7\u5355\u5f15\u53f7\uff08'\uff09\u3001\u53cc\u5f15\u53f7\uff08"\uff09\u6216\u4e09\u91cd\u5f15\u53f7\uff08'''\u6216"""\uff09\u6765\u521b\u5efa\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u8d4b\u503c\u7684\u65b9\u5f0f\u5c06\u6587\u672c\u5b58\u50a8\u5728\u53d8\u91cf\u4e2d\uff0c\u4f8b\u5982\uff1amy_string = "Hello, World!"<\/code>\u3002\u521b\u5efa\u540e\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\uff08\u5982my_string.upper()<\/code>\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199\uff09\u6765\u64cd\u4f5c\u5b83\u4eec\u3002<\/p>\n
Python\u4e2d\u5b57\u7b26\u4e32\u7684\u8fde\u63a5\u548c\u683c\u5f0f\u5316\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff1f<\/strong>
\u5b57\u7b26\u4e32\u8fde\u63a5\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u52a0\u53f7\uff08+\uff09\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff0cstr1 = "Hello"<\/code>\u548cstr2 = "World"<\/code>\u53ef\u4ee5\u901a\u8fc7str3 = str1 + " " + str2<\/code>\u8fde\u63a5\u6210"Hello World"<\/code>\u3002\u5bf9\u4e8e\u683c\u5f0f\u5316\uff0cPython\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\uff0c\u5305\u62ecf-string\uff08\u4f8b\u5982\uff1aname = "Alice"; greeting = f"Hello, {name}!"<\/code>\uff09\u548cformat()<\/code>\u65b9\u6cd5\uff08\u4f8b\u5982\uff1a"Hello, {}".format(name)<\/code>\uff09\uff0c\u4f7f\u5f97\u63d2\u5165\u53d8\u91cf\u53d8\u5f97\u66f4\u52a0\u7075\u6d3b\u548c\u7b80\u6d01\u3002<\/p>\n
\u5728Python\u4e2d\u5982\u4f55\u5904\u7406\u591a\u884c\u5b57\u7b26\u4e32\uff1f<\/strong>
\u5904\u7406\u591a\u884c\u5b57\u7b26\u4e32\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e09\u91cd\u5f15\u53f7\uff08'''\u6216"""\uff09\u3002\u8fd9\u6837\u53ef\u4ee5\u65b9\u4fbf\u5730\u5728\u5b57\u7b26\u4e32\u4e2d\u5305\u542b\u6362\u884c\u7b26\uff0c\u800c\u4e0d\u9700\u8981\u4f7f\u7528\\n<\/code>\u3002\u4f8b\u5982\uff1a  <\/p>\n
multi_line_string = """\u8fd9\u662f\u4e00\u6bb5\n\u591a\u884c\u5b57\u7b26\u4e32"""\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u5f0f\u4f7f\u5f97\u5b57\u7b26\u4e32\u7684\u4e66\u5199\u66f4\u52a0\u76f4\u89c2\uff0c\u7279\u522b\u9002\u5408\u957f\u6587\u672c\u7684\u5904\u7406\u3002\u540c\u65f6\uff0c\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u65b9\u6cd5\uff08\u5982strip()<\/code>\uff09\u53bb\u9664\u591a\u4f59\u7684\u7a7a\u683c\u548c\u6362\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u8c03\u7528\u5b57\u7b26\u4e32\u3001\u5b57\u7b26\u4e32\u53ef\u4ee5\u901a\u8fc7\u5f15\u53f7\u3001\u7d22\u5f15\u3001\u5207\u7247\u7b49\u65b9\u5f0f\u8fdb\u884c\u8c03\u7528\u3002\u5b57\u7b26\u4e32\u5728Pytho […]","protected":false},"author":3,"featured_media":1035778,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1035764"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1035764"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1035764\/revisions"}],"predecessor-version":[{"id":1035780,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1035764\/revisions\/1035780"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1035778"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1035764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1035764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1035764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}