sub()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u6a21\u5f0f\u3002<\/p>\n<\/p>\nimport re<\/p>\ntext = "The rain in Spain"<\/p>\n
result = re.sub(r"\\bS\\w+", "cloud", text)<\/p>\n
print(result) # \u8f93\u51fa: The rain in cloud<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
\u4e09\u3001\u6587\u4ef6I\/O\u64cd\u4f5c<\/h3>\n<\/p>\n
\u6709\u65f6\u6211\u4eec\u9700\u8981\u4ece\u6587\u4ef6\u4e2d\u8bfb\u53d6\u5b57\u7b26\u4e32\u6216\u8005\u5c06\u5b57\u7b26\u4e32\u5199\u5165\u6587\u4ef6\u3002<\/p>\n<\/p>\n
3.1 \u8bfb\u53d6\u6587\u4ef6<\/h4>\n<\/p>\n\n- \n
\u4f7f\u7528open()<\/code>\u51fd\u6570\u53ef\u4ee5\u6253\u5f00\u6587\u4ef6\u8fdb\u884c\u8bfb\u53d6\u3002<\/p>\n<\/p>\nwith open('example.txt', 'r') as file:<\/p>\n content = file.read()<\/p>\n
print(content)<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
3.2 \u5199\u5165\u6587\u4ef6<\/h4>\n<\/p>\n\n- \n
\u4f7f\u7528open()<\/code>\u51fd\u6570\u53ef\u4ee5\u6253\u5f00\u6587\u4ef6\u8fdb\u884c\u5199\u5165\u3002<\/p>\n<\/p>\nwith open('output.txt', 'w') as file:<\/p>\n file.write("Hello, Python!")<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
\u56db\u3001\u6570\u636e\u89e3\u6790<\/h3>\n<\/p>\n
\u5728\u5904\u7406\u6570\u636e\u65f6\uff0c\u901a\u5e38\u9700\u8981\u4ece\u5b57\u7b26\u4e32\u4e2d\u89e3\u6790\u51fa\u6709\u7528\u7684\u4fe1\u606f\u3002<\/p>\n<\/p>\n
4.1 \u4f7f\u7528json<\/code>\u6a21\u5757<\/h4>\n<\/p>\n\n- \n
json<\/code>\u6a21\u5757\u7528\u4e8e\u89e3\u6790\u548c\u751f\u6210JSON\u683c\u5f0f\u7684\u6570\u636e\u3002<\/p>\n<\/p>\nimport json<\/p>\njson_string = '{"name": "John", "age": 30}'<\/p>\n
data = json.loads(json_string)<\/p>\n
print(data['name']) # \u8f93\u51fa: John<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
4.2 \u4f7f\u7528csv<\/code>\u6a21\u5757<\/h4>\n<\/p>\n\n- \n
csv<\/code>\u6a21\u5757\u7528\u4e8e\u89e3\u6790CSV\u683c\u5f0f\u7684\u6570\u636e\u3002<\/p>\n<\/p>\nimport csv<\/p>\nwith open('data.csv', newline='') as csvfile:<\/p>\n
reader = csv.reader(csvfile)<\/p>\n
for row in reader:<\/p>\n
print(row)<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
\u4e94\u3001\u5b57\u7b26\u4e32\u683c\u5f0f\u5316<\/h3>\n<\/p>\n
Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\uff0c\u53ef\u4ee5\u7528\u6765\u751f\u6210\u683c\u5f0f\u5316\u7684\u5b57\u7b26\u4e32\u8f93\u51fa\u3002<\/p>\n<\/p>\n
5.1 \u4f7f\u7528%<\/code>\u683c\u5f0f\u5316<\/h4>\n<\/p>\n\n- \n
\u8fd9\u79cd\u65b9\u6cd5\u7c7b\u4f3c\u4e8eC\u8bed\u8a00\u4e2d\u7684printf\u98ce\u683c\u3002<\/p>\n<\/p>\n
name = "Alice"<\/p>\nage = 25<\/p>\n
print("Name: %s, Age: %d" % (name, age)) # \u8f93\u51fa: Name: Alice, Age: 25<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
5.2 \u4f7f\u7528str.format()<\/code><\/h4>\n<\/p>\n\n- \n
\u8fd9\u662fPython\u8f83\u65b0\u7684\u683c\u5f0f\u5316\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
name = "Bob"<\/p>\nage = 30<\/p>\n
print("Name: {}, Age: {}".format(name, age)) # \u8f93\u51fa: Name: Bob, Age: 30<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
5.3 \u4f7f\u7528f-string\uff08Python 3.6+\uff09<\/h4>\n<\/p>\n\n- \n
f-string\u662fPython 3.6\u4e2d\u5f15\u5165\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u65b9\u6cd5\u3002<\/p>\n<\/p>\n
name = "Charlie"<\/p>\nage = 35<\/p>\n
print(f"Name: {name}, Age: {age}") # \u8f93\u51fa: Name: Charlie, Age: 35<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
\u516d\u3001\u5b57\u7b26\u4e32\u7f16\u7801\u548c\u89e3\u7801<\/h3>\n<\/p>\n
\u5904\u7406\u4e0d\u540c\u7f16\u7801\u7684\u5b57\u7b26\u4e32\u65f6\uff0c\u9700\u8981\u4e86\u89e3\u7f16\u7801\u548c\u89e3\u7801\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
6.1 \u7f16\u7801\u5b57\u7b26\u4e32<\/h4>\n<\/p>\n\n- \n
\u4f7f\u7528encode()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u7f16\u7801\u4e3a\u5b57\u8282\u3002<\/p>\n<\/p>\ntext = "Hello, world!"<\/p>\nbyte_data = text.encode('utf-8')<\/p>\n
print(byte_data) # \u8f93\u51fa: b'Hello, world!'<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
6.2 \u89e3\u7801\u5b57\u8282<\/h4>\n<\/p>\n\n- \n
\u4f7f\u7528decode()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5b57\u8282\u89e3\u7801\u4e3a\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\nbyte_data = b'Hello, world!'<\/p>\ntext = byte_data.decode('utf-8')<\/p>\n
print(text) # \u8f93\u51fa: Hello, world!<\/p>\n
<\/code><\/pre>\n<\/p>\n<\/li>\n<\/ul>\n
\u901a\u8fc7\u4ee5\u4e0a\u4e0d\u540c\u7684\u65b9\u6cd5\u548c\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230Python\u4e2d\u5904\u7406\u5b57\u7b26\u4e32\u7684\u7075\u6d3b\u6027\u548c\u591a\u6837\u6027\u3002\u8fd9\u4e9b\u65b9\u6cd5\u548c\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5728\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\u4e0b\u6709\u6548\u5730\u64cd\u4f5c\u548c\u5904\u7406\u5b57\u7b26\u4e32\u3002\u65e0\u8bba\u662f\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\u8fd8\u662f\u590d\u6742\u7684\u6570\u636e\u89e3\u6790\uff0cPython\u90fd\u80fd\u63d0\u4f9b\u5f3a\u5927\u7684\u652f\u6301\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u5982\u4f55\u5728Python\u4e2d\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u53ef\u6267\u884c\u4ee3\u7801\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528exec()<\/code>\u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u4f5c\u4e3a\u4ee3\u7801\u6267\u884c\u3002\u901a\u8fc7\u5c06\u5305\u542b\u6709\u6548Python\u4ee3\u7801\u7684\u5b57\u7b26\u4e32\u4f20\u9012\u7ed9exec()<\/code>\uff0c\u53ef\u4ee5\u5b9e\u73b0\u52a8\u6001\u4ee3\u7801\u6267\u884c\u3002\u4f8b\u5982\uff1a <\/p>\ncode = "print('Hello, World!')"\nexec(code)\n<\/code><\/pre>\n\u8fd9\u6bb5\u4ee3\u7801\u4f1a\u8f93\u51faHello, World!<\/code>\u3002\u4e0d\u8fc7\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528exec()<\/code>\u5b58\u5728\u5b89\u5168\u98ce\u9669\uff0c\u56e0\u4e3a\u6267\u884c\u7684\u4ee3\u7801\u53ef\u80fd\u5305\u542b\u6076\u610f\u5185\u5bb9\u3002<\/p>\n\u5728Python\u4e2d\u5982\u4f55\u8bfb\u53d6\u548c\u64cd\u4f5c\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u5b57\u7b26\u4e32\uff1f<\/strong>
\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684open()<\/code>\u51fd\u6570\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u3002\u5c06\u6587\u4ef6\u540d\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff0c\u6307\u5b9a\u6a21\u5f0f\uff08\u5982'r'\u8868\u793a\u8bfb\u53d6\uff09\u3002\u8bfb\u53d6\u6587\u4ef6\u540e\uff0c\u53ef\u4ee5\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u4f8b\u5982\u67e5\u627e\u3001\u66ff\u6362\u7b49\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a <\/p>\nwith open('example.txt', 'r') as file:\n content = file.read()\n print(content)\n<\/code><\/pre>\n\u4f7f\u7528with<\/code>\u8bed\u53e5\u53ef\u4ee5\u786e\u4fdd\u6587\u4ef6\u5728\u64cd\u4f5c\u5b8c\u6210\u540e\u6b63\u786e\u5173\u95ed\u3002<\/p>\n\u5982\u4f55\u5728Python\u4e2d\u5904\u7406\u5b57\u7b26\u4e32\u7684\u5e38\u89c1\u64cd\u4f5c\uff1f<\/strong>
Python\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u5b57\u7b26\u4e32\u65b9\u6cd5\u6765\u5904\u7406\u5b57\u7b26\u4e32\uff0c\u5982strip()<\/code>\u3001split()<\/code>\u3001join()<\/code>\u7b49\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u6e05\u7406\u3001\u5206\u5272\u6216\u8fde\u63a5\u3002\u4f8b\u5982\uff1a <\/p>\ntext = " Hello, World! "\ncleaned_text = text.strip() # \u53bb\u9664\u9996\u5c3e\u7a7a\u683c\nwords = cleaned_text.split(', ') # \u6309\u9017\u53f7\u5206\u5272\nprint(words) # \u8f93\u51fa: ['Hello', 'World!']\n<\/code><\/pre>\n\u638c\u63e1\u8fd9\u4e9b\u57fa\u672c\u64cd\u4f5c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u66f4\u6709\u6548\u5730\u5904\u7406\u5b57\u7b26\u4e32\u6570\u636e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u65b9\u5f0f\u6253\u5f00\u5b57\u7b26\u4e32\uff08str\uff09\u8fdb\u884c\u5904\u7406\uff0c\u5305\u62ec\u76f4\u63a5\u64cd\u4f5c\u5b57\u7b26\u4e32\u3001\u4f7f\u7528\u6587\u4ef6I\/O\u64cd\u4f5c\u3001\u548c\u6570\u636e […]","protected":false},"author":3,"featured_media":944527,"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\/944524"}],"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=944524"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/944524\/revisions"}],"predecessor-version":[{"id":944530,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/944524\/revisions\/944530"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/944527"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=944524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=944524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=944524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"python\u5982\u4f55\u6253\u5f00](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/25081452\/7f288252-763d-4585-a94d-32159884a748.webp\")
<\/p>\n