{"id":1116709,"date":"2025-01-08T18:18:59","date_gmt":"2025-01-08T10:18:59","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1116709.html"},"modified":"2025-01-08T18:19:02","modified_gmt":"2025-01-08T10:19:02","slug":"python%e5%a6%82%e4%bd%95%e6%94%b9%e5%8f%98%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%87%8c%e9%9d%a2%e7%9a%84%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1116709.html","title":{"rendered":"python\u5982\u4f55\u6539\u53d8\u5b57\u7b26\u4e32\u91cc\u9762\u7684\u5b57\u7b26"},"content":{"rendered":"

\"python\u5982\u4f55\u6539\u53d8\u5b57\u7b26\u4e32\u91cc\u9762\u7684\u5b57\u7b26\"<\/p>\n

\u5728Python\u4e2d\uff0c\u6539\u53d8\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5982\uff1a\u4f7f\u7528\u5207\u7247\u548c\u8fde\u63a5\u3001\u4f7f\u7528replace()\u51fd\u6570\u3001\u901a\u8fc7\u5217\u8868\u8f6c\u6362\u8fdb\u884c\u4fee\u6539\u3002<\/strong> \u5728\u8fd9\u91cc\u6211\u4eec\u91cd\u70b9\u4ecb\u7ecd\u4e00\u79cd\u65b9\u6cd5\uff0c\u5373\u4f7f\u7528\u5207\u7247\u548c\u8fde\u63a5\u7684\u65b9\u6cd5\u6765\u6539\u53d8\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u3002<\/p>\n<\/p>\n

\u901a\u8fc7\u5207\u7247\u548c\u8fde\u63a5\u7684\u65b9\u6cd5\u4fee\u6539\u5b57\u7b26\u4e32\uff0c\u6211\u4eec\u53ef\u4ee5\u5148\u5c06\u5b57\u7b26\u4e32\u5207\u7247\u6210\u4e24\u90e8\u5206\uff0c\u4e4b\u540e\u518d\u5c06\u65b0\u7684\u5b57\u7b26\u63d2\u5165\u5176\u4e2d\uff0c\u6700\u540e\u5c06\u5176\u62fc\u63a5\u8d77\u6765\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

s = "hello"<\/p>\n
new_s = s[:1] + "a" + s[2:]<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahallo<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"hello"\u5207\u7247\u6210\u4e24\u90e8\u5206\uff1a"h"\u548c"llo"\uff0c\u5e76\u5728\u4e2d\u95f4\u63d2\u5165\u5b57\u7b26"a"\uff0c\u5f62\u6210\u4e86\u65b0\u7684\u5b57\u7b26\u4e32"hallo"\u3002<\/p>\n<\/p>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u5c06\u901a\u8fc7\u591a\u4e2a\u5c0f\u6807\u9898\u8be6\u7ec6\u4ecb\u7ecd\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u6765\u6539\u53d8\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u4f7f\u7528\u5207\u7247\u548c\u8fde\u63a5<\/h2>\n<\/p>\n
\u5207\u7247\u548c\u8fde\u63a5\u662f\u6700\u57fa\u7840\u4e5f\u662f\u6700\u7075\u6d3b\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u901a\u8fc7\u5207\u7247\uff0c\u6211\u4eec\u53ef\u4ee5\u622a\u53d6\u5b57\u7b26\u4e32\u7684\u4efb\u4f55\u90e8\u5206\u5e76\u8fdb\u884c\u4fee\u6539\uff0c\u7136\u540e\u5c06\u5176\u91cd\u65b0\u7ec4\u5408\u6210\u65b0\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
1.\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
s = "hello"<\/p>\n
index = 1<\/p>\n
new_char = "a"<\/p>\n
new_s = s[:index] + new_char + s[index + 1:]<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahallo<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"s"\u4ece\u7d22\u5f151\u5904\u5207\u5272\u6210\u4e24\u90e8\u5206\uff0c\u524d\u534a\u90e8\u5206\u662fs[:1]<\/code>\u5373"h"\uff0c\u540e\u534a\u90e8\u5206\u662fs[2:]<\/code>\u5373"llo"\uff0c\u7136\u540e\u5c06\u5b57\u7b26"a"\u63d2\u5165\u4e2d\u95f4\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hallo"\u3002<\/p>\n<\/p>\n
2.\u5904\u7406\u591a\u4e2a\u5b57\u7b26\u7684\u66ff\u6362<\/h3>\n<\/p>\n
\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5207\u7247\u548c\u8fde\u63a5\u7684\u65b9\u6cd5\u4e00\u6b21\u6027\u66ff\u6362\u591a\u4e2a\u5b57\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello world"<\/p>\n
start = 6<\/p>\n
end = 11<\/p>\n
new_chars = "Python"<\/p>\n
new_s = s[:start] + new_chars + s[end:]<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello Python<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"s"\u4ece\u7d22\u5f156\u5230\u7d22\u5f1511\u7684\u90e8\u5206\u66ff\u6362\u4e3a\u65b0\u7684\u5b57\u7b26\u4e32"Python"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello Python"\u3002<\/p>\n<\/p>\n
3.\u5904\u7406\u8d8a\u754c\u95ee\u9898<\/h3>\n<\/p>\n
\u5728\u8fdb\u884c\u5207\u7247\u548c\u8fde\u63a5\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u5904\u7406\u8d8a\u754c\u95ee\u9898\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello"<\/p>\n
index = 10<\/p>\n
new_char = "a"<\/p>\n
if index < len(s):<\/p>\n
    new_s = s[:index] + new_char + s[index + 1:]<\/p>\n
else:<\/p>\n
    new_s = s + new_char<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahelloa<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u8d8a\u754c\uff0c\u5982\u679c\u6ca1\u6709\u8d8a\u754c\u5219\u8fdb\u884c\u6b63\u5e38\u7684\u5207\u7247\u548c\u8fde\u63a5\u64cd\u4f5c\uff0c\u5982\u679c\u8d8a\u754c\u5219\u76f4\u63a5\u5c06\u65b0\u5b57\u7b26\u6dfb\u52a0\u5230\u5b57\u7b26\u4e32\u672b\u5c3e\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528replace()\u51fd\u6570<\/h2>\n<\/p>\n
replace()\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u5b57\u7b26\u4e32\u51fd\u6570\u4e4b\u4e00\uff0c\u7528\u4e8e\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u6307\u5b9a\u5b57\u7b26\u6216\u5b50\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
1.\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
replace()\u51fd\u6570\u7684\u57fa\u672c\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
s = "hello"<\/p>\n
new_s = s.replace("e", "a")<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahallo<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684\u6240\u6709"e"\u66ff\u6362\u4e3a"a"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hallo"\u3002<\/p>\n<\/p>\n
2.\u66ff\u6362\u591a\u4e2a\u5b57\u7b26<\/h3>\n<\/p>\n
replace()\u51fd\u6570\u4e5f\u53ef\u4ee5\u7528\u4e8e\u66ff\u6362\u591a\u4e2a\u5b57\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello world"<\/p>\n
new_s = s.replace("world", "Python")<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello Python<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684"world"\u66ff\u6362\u4e3a"Python"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello Python"\u3002<\/p>\n<\/p>\n
3.\u9650\u5236\u66ff\u6362\u6b21\u6570<\/h3>\n<\/p>\n
replace()\u51fd\u6570\u8fd8\u53ef\u4ee5\u9650\u5236\u66ff\u6362\u7684\u6b21\u6570\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello world world"<\/p>\n
new_s = s.replace("world", "Python", 1)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello Python world<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684\u7b2c\u4e00\u4e2a"world"\u66ff\u6362\u4e3a"Python"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello Python world"\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u901a\u8fc7\u5217\u8868\u8f6c\u6362\u8fdb\u884c\u4fee\u6539<\/h2>\n<\/p>\n
\u7531\u4e8e\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5217\u8868\uff0c\u8fdb\u884c\u4fee\u6539\u540e\u518d\u8f6c\u6362\u56de\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
1.\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
s = "hello"<\/p>\n
s_list = list(s)<\/p>\n
s_list[1] = "a"<\/p>\n
new_s = "".join(s_list)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahallo<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"s"\u8f6c\u6362\u4e3a\u5217\u8868s_list<\/code>\uff0c\u7136\u540e\u5c06\u7d22\u5f15\u4e3a1\u7684\u5b57\u7b26\u66ff\u6362\u4e3a"a"\uff0c\u6700\u540e\u5c06\u5217\u8868\u8f6c\u6362\u56de\u5b57\u7b26\u4e32\uff0c\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hallo"\u3002<\/p>\n<\/p>\n
2.\u5904\u7406\u591a\u4e2a\u5b57\u7b26\u7684\u66ff\u6362<\/h3>\n<\/p>\n
\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u8f6c\u6362\u7684\u65b9\u6cd5\u4e00\u6b21\u6027\u66ff\u6362\u591a\u4e2a\u5b57\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello world"<\/p>\n
s_list = list(s)<\/p>\n
s_list[6:11] = list("Python")<\/p>\n
new_s = "".join(s_list)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello Python<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32"s"\u8f6c\u6362\u4e3a\u5217\u8868s_list<\/code>\uff0c\u7136\u540e\u5c06\u7d22\u5f15\u4e3a6\u523011\u7684\u90e8\u5206\u66ff\u6362\u4e3a\u65b0\u7684\u5b57\u7b26\u4e32"Python"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello Python"\u3002<\/p>\n<\/p>\n
3.\u5904\u7406\u8d8a\u754c\u95ee\u9898<\/h3>\n<\/p>\n
\u5728\u8fdb\u884c\u5217\u8868\u8f6c\u6362\u65f6\uff0c\u4e5f\u9700\u8981\u6ce8\u610f\u5904\u7406\u8d8a\u754c\u95ee\u9898\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello"<\/p>\n
s_list = list(s)<\/p>\n
index = 10<\/p>\n
new_char = "a"<\/p>\n
if index < len(s_list):<\/p>\n
    s_list[index] = new_char<\/p>\n
else:<\/p>\n
    s_list.append(new_char)<\/p>\n
new_s = "".join(s_list)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahelloa<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u68c0\u67e5\u7d22\u5f15\u662f\u5426\u8d8a\u754c\uff0c\u5982\u679c\u6ca1\u6709\u8d8a\u754c\u5219\u8fdb\u884c\u6b63\u5e38\u7684\u66ff\u6362\u64cd\u4f5c\uff0c\u5982\u679c\u8d8a\u754c\u5219\u5c06\u65b0\u5b57\u7b26\u6dfb\u52a0\u5230\u5217\u8868\u672b\u5c3e\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/h2>\n<\/p>\n
\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u4e5f\u53ef\u4ee5\u7528\u6765\u4fee\u6539\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\u3002<\/p>\n<\/p>\n
1.\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
s = "hello {}"<\/p>\n
new_s = s.format("world")<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello world<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684\u5360\u4f4d\u7b26"{}"\u66ff\u6362\u4e3a"world"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello world"\u3002<\/p>\n<\/p>\n
2.\u4f7f\u7528\u591a\u4e2a\u5360\u4f4d\u7b26<\/h3>\n<\/p>\n
\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2a\u5360\u4f4d\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello {} and {}"<\/p>\n
new_s = s.format("world", "Python")<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello world and Python<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5360\u4f4d\u7b26"{}"\u66ff\u6362\u4e3a"world"\uff0c\u7b2c\u4e8c\u4e2a\u5360\u4f4d\u7b26"{}"\u66ff\u6362\u4e3a"Python"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello world and Python"\u3002<\/p>\n<\/p>\n
3.\u4f7f\u7528\u547d\u540d\u5360\u4f4d\u7b26<\/h3>\n<\/p>\n
\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u8fd8\u53ef\u4ee5\u4f7f\u7528\u547d\u540d\u5360\u4f4d\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello {name}"<\/p>\n
new_s = s.format(name="world")<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello world<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684\u547d\u540d\u5360\u4f4d\u7b26"{name}"\u66ff\u6362\u4e3a"world"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello world"\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f<\/h2>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u5f3a\u5927\u7684\u6587\u672c\u5904\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u590d\u6742\u7684\u5b57\u7b26\u4e32\u66ff\u6362\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
1.\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Python\u7684re\u6a21\u5757\u6765\u8fdb\u884c\u6b63\u5219\u8868\u8fbe\u5f0f\u66ff\u6362\u64cd\u4f5c\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
import re<\/p>\n
s = "hello world"<\/p>\n
new_s = re.sub(r"world", "Python", s)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello Python<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684"world"\u66ff\u6362\u4e3a"Python"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello Python"\u3002<\/p>\n<\/p>\n
2.\u5904\u7406\u590d\u6742\u7684\u66ff\u6362\u64cd\u4f5c<\/h3>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u53ef\u4ee5\u5904\u7406\u590d\u6742\u7684\u66ff\u6362\u64cd\u4f5c\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
import re<\/p>\n
s = "hello 123 world 456"<\/p>\n
new_s = re.sub(r"\\d+", "number", s)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello number world number<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684\u6240\u6709\u6570\u5b57\u66ff\u6362\u4e3a"number"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello number world number"\u3002<\/p>\n<\/p>\n
3.\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u8fdb\u884c\u66ff\u6362<\/h3>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u8fd8\u53ef\u4ee5\u4f7f\u7528\u56de\u8c03\u51fd\u6570\u6765\u8fdb\u884c\u66ff\u6362\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
import re<\/p>\n
def replace(match):<\/p>\n
    return match.group(0).upper()<\/p>\n
s = "hello world"<\/p>\n
new_s = re.sub(r"world", replace, s)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahello WORLD<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u56de\u8c03\u51fd\u6570replace<\/code>\uff0c\u5c06\u5339\u914d\u5230\u7684\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199\uff0c\u7136\u540e\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684"world"\u66ff\u6362\u4e3a"WORLD"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hello WORLD"\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528translate()\u51fd\u6570<\/h2>\n<\/p>\n
translate()\u51fd\u6570\u53ef\u4ee5\u7528\u4e8e\u9ad8\u6548\u5730\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u591a\u4e2a\u5b57\u7b26\u3002<\/p>\n<\/p>\n
1.\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u7ffb\u8bd1\u8868\uff0c\u7136\u540e\u4f7f\u7528translate()\u51fd\u6570\u8fdb\u884c\u66ff\u6362\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello world"<\/p>\n
trans_table = str.maketrans("world", "WORLD")<\/p>\n
new_s = s.translate(trans_table)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahEllO WOrlD<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528str.maketrans()\u51fd\u6570\u521b\u5efa\u4e86\u4e00\u4e2a\u7ffb\u8bd1\u8868\uff0c\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684"world"\u66ff\u6362\u4e3a"WORLD"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hEllO WOrlD"\u3002<\/p>\n<\/p>\n
2.\u5904\u7406\u591a\u4e2a\u5b57\u7b26\u7684\u66ff\u6362<\/h3>\n<\/p>\n
translate()\u51fd\u6570\u53ef\u4ee5\u4e00\u6b21\u6027\u66ff\u6362\u591a\u4e2a\u5b57\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello world"<\/p>\n
trans_table = str.maketrans({"h": "H", "w": "W", "o": "O"})<\/p>\n
new_s = s.translate(trans_table)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1aHellO WOrld<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528str.maketrans()\u51fd\u6570\u521b\u5efa\u4e86\u4e00\u4e2a\u7ffb\u8bd1\u8868\uff0c\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684"h"\u66ff\u6362\u4e3a"H"\uff0c"w"\u66ff\u6362\u4e3a"W"\uff0c"o"\u66ff\u6362\u4e3a"O"\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"HellO WOrld"\u3002<\/p>\n<\/p>\n
3.\u5220\u9664\u5b57\u7b26<\/h3>\n<\/p>\n
translate()\u51fd\u6570\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\uff0c\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
s = "hello world"<\/p>\n
trans_table = str.maketrans("", "", "aeiou")<\/p>\n
new_s = s.translate(trans_table)<\/p>\n
print(new_s)  # \u8f93\u51fa\uff1ahll wrld<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528str.maketrans()\u51fd\u6570\u521b\u5efa\u4e86\u4e00\u4e2a\u7ffb\u8bd1\u8868\uff0c\u5c06\u5b57\u7b26\u4e32"s"\u4e2d\u7684\u6240\u6709\u5143\u97f3\u5b57\u7b26\u5220\u9664\uff0c\u6700\u7ec8\u5f97\u5230\u65b0\u7684\u5b57\u7b26\u4e32"hll wrld"\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u7ed3\u8bba<\/h2>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u6539\u53d8\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5305\u62ec\uff1a\u4f7f\u7528\u5207\u7247\u548c\u8fde\u63a5\u3001\u4f7f\u7528replace()\u51fd\u6570\u3001\u901a\u8fc7\u5217\u8868\u8f6c\u6362\u8fdb\u884c\u4fee\u6539\u3001\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3001\u4f7f\u7528translate()\u51fd\u6570\u7b49\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u7f3a\u70b9\u548c\u9002\u7528\u573a\u666f\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u4fee\u6539\u5b57\u7b26\u4e32\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u638c\u63e1\u591a\u79cd\u65b9\u6cd5\u7684\u4f7f\u7528\u6280\u5de7\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u7075\u6d3b\u5730\u5904\u7406\u5b57\u7b26\u4e32\u7684\u4fee\u6539\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528str.replace()<\/code>\u65b9\u6cd5\u6765\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u60f3\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u201ca\u201d\u66ff\u6362\u4e3a\u201cb\u201d\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a  <\/p>\n
original_string = "banana"\nnew_string = original_string.replace("a", "b")\nprint(new_string)  # \u8f93\u51fa: bbnnbn\n<\/code><\/pre>\n
\u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\uff0c\u539f\u59cb\u5b57\u7b26\u4e32\u4e0d\u4f1a\u6539\u53d8\u3002<\/p>\n
\u5728Python\u4e2d\u53ef\u4ee5\u4f7f\u7528\u54ea\u4e9b\u65b9\u6cd5\u6765\u4fee\u6539\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\uff1f<\/strong>
\u9664\u4e86str.replace()<\/code>\uff0c\u8fd8\u6709\u5176\u4ed6\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u4fee\u6539\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u7ed3\u5408join()<\/code>\u65b9\u6cd5\uff0c\u6216\u8005\u4f7f\u7528re<\/code>\u6a21\u5757\u6765\u8fdb\u884c\u66f4\u590d\u6742\u7684\u66ff\u6362\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u7684\u793a\u4f8b\uff1a  <\/p>\n
original_string = "banana"\nnew_string = ''.join(['b' if char == 'a' else char for char in original_string])\nprint(new_string)  # \u8f93\u51fa: bbnnbn\n<\/code><\/pre>\n
\u5b57\u7b26\u4e32\u4fee\u6539\u540e\u4f1a\u5f71\u54cd\u539f\u59cb\u5b57\u7b26\u4e32\u5417\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u6bcf\u6b21\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u4fee\u6539\u65f6\uff0c\u90fd\u4f1a\u751f\u6210\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\uff0c\u800c\u4e0d\u4f1a\u6539\u53d8\u539f\u59cb\u5b57\u7b26\u4e32\u3002\u56e0\u6b64\uff0c\u539f\u59cb\u5b57\u7b26\u4e32\u4fdd\u6301\u4e0d\u53d8\uff0c\u4f60\u53ef\u4ee5\u5728\u9700\u8981\u65f6\u4fdd\u7559\u5b83\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u6539\u53d8\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5982\uff1a\u4f7f\u7528\u5207\u7247\u548c\u8fde\u63a5\u3001\u4f7f\u7528replace()\u51fd\u6570\u3001\u901a\u8fc7 […]","protected":false},"author":3,"featured_media":1116714,"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\/1116709"}],"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=1116709"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1116709\/revisions"}],"predecessor-version":[{"id":1116716,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1116709\/revisions\/1116716"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1116714"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1116709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1116709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1116709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}