import re<\/p>\ntext = "There are 2 apples and 5 bananas."<\/p>\n
new_text = re.sub(r"\\d+", "some", text)<\/p>\n
print(new_text) # \u8f93\u51fa: There are some apples and some bananas.<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\\d+<\/code>\u662f\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u5339\u914d\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u5b57\u3002<\/p>\n<\/p>\n\u4e09\u3001\u5b57\u7b26\u4e32\u6a21\u677f\u66ff\u6362<\/p>\n<\/p>\n
Python\u4e2d\u4e5f\u53ef\u4ee5\u4f7f\u7528\u6a21\u677f\u66ff\u6362\uff0c\u8fd9\u662f\u901a\u8fc7string.Template<\/code>\u7c7b\u5b9e\u73b0\u7684\u3002\u8fd9\u79cd\u65b9\u5f0f\u9002\u5408\u9700\u8981\u5728\u5b57\u7b26\u4e32\u4e2d\u8fdb\u884c\u591a\u5904\u66ff\u6362\u7684\u573a\u666f\u3002<\/p>\n<\/p>\n\n- \u4f7f\u7528\u6a21\u677f\u8fdb\u884c\u66ff\u6362<\/li>\n<\/ol>\n
\u9996\u5148\uff0c\u4f60\u9700\u8981\u5bfc\u5165Template<\/code>\u7c7b\uff0c\u7136\u540e\u5b9a\u4e49\u4e00\u4e2a\u6a21\u677f\u5b57\u7b26\u4e32\uff0c\u5728\u5b57\u7b26\u4e32\u4e2d\u4f7f\u7528$<\/code>\u8fdb\u884c\u5360\u4f4d\uff1a<\/p>\n<\/p>\nfrom string import Template<\/p>\ntemplate = Template("Hello, $name!")<\/p>\n
new_text = template.substitute(name="Alice")<\/p>\n
print(new_text) # \u8f93\u51fa: Hello, Alice!<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c$name<\/code>\u662f\u4e00\u4e2a\u5360\u4f4d\u7b26\uff0c\u4f7f\u7528substitute()<\/code>\u65b9\u6cd5\u8fdb\u884c\u66ff\u6362\u3002<\/p>\n<\/p>\n\n- \u4f7f\u7528\u5b57\u5178\u8fdb\u884c\u6279\u91cf\u66ff\u6362<\/li>\n<\/ol>\n
Template<\/code>\u7684substitute()<\/code>\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u63a5\u53d7\u4e00\u4e2a\u5b57\u5178\u53c2\u6570\uff0c\u7528\u4e8e\u540c\u65f6\u66ff\u6362\u591a\u4e2a\u5360\u4f4d\u7b26\uff1a<\/p>\n<\/p>\nfrom string import Template<\/p>\ntemplate = Template("Hello, $name! Welcome to $place.")<\/p>\n
data = {"name": "Alice", "place": "Wonderland"}<\/p>\n
new_text = template.substitute(data)<\/p>\n
print(new_text) # \u8f93\u51fa: Hello, Alice! Welcome to Wonderland.<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u8fdb\u884c\u6279\u91cf\u66ff\u6362\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5728\u6587\u4ef6\u4e2d\u66ff\u6362<\/p>\n<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5b57\u7b26\u4e32\u66ff\u6362\u4e0d\u4ec5\u9650\u4e8e\u5185\u5b58\u4e2d\u7684\u5b57\u7b26\u4e32\uff0c\u8fd8\u5e38\u5e38\u9700\u8981\u5bf9\u6587\u4ef6\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\n- \u8bfb\u53d6\u6587\u4ef6\u5e76\u66ff\u6362\u5185\u5bb9<\/li>\n<\/ol>\n
\u53ef\u4ee5\u5148\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u7136\u540e\u8fdb\u884c\u5b57\u7b26\u4e32\u66ff\u6362\uff0c\u6700\u540e\u5c06\u66ff\u6362\u540e\u7684\u5185\u5bb9\u5199\u56de\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
with open("example.txt", "r") as file:<\/p>\n content = file.read()<\/p>\n
content = content.replace("old_string", "new_string")<\/p>\n
with open("example.txt", "w") as file:<\/p>\n
file.write(content)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u7b80\u5355\u7684\u66ff\u6362\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\n- \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u66ff\u6362\u6587\u4ef6\u5185\u5bb9<\/li>\n<\/ol>\n
\u5982\u679c\u9700\u8981\u8fdb\u884c\u590d\u6742\u7684\u66ff\u6362\uff0c\u53ef\u4ee5\u7ed3\u5408\u6b63\u5219\u8868\u8fbe\u5f0f\uff1a<\/p>\n<\/p>\n
import re<\/p>\nwith open("example.txt", "r") as file:<\/p>\n
content = file.read()<\/p>\n
content = re.sub(r"pattern", "replacement", content)<\/p>\n
with open("example.txt", "w") as file:<\/p>\n
file.write(content)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u9700\u8981\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u6a21\u5f0f\u5339\u914d\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u66ff\u6362\u5217\u8868\u4e2d\u7684\u5b57\u7b26\u4e32<\/p>\n<\/p>\n
\u5982\u679c\u4f60\u9700\u8981\u5bf9\u5217\u8868\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\u4e32\u8fdb\u884c\u66ff\u6362\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\uff1a<\/p>\n<\/p>\n
\n- \u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u66ff\u6362<\/li>\n<\/ol>\n
fruits = ["apple", "banana", "cherry"]<\/p>\nnew_fruits = [fruit.replace("a", "o") for fruit in fruits]<\/p>\n
print(new_fruits) # \u8f93\u51fa: ['opple', 'bonono', 'cherry']<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u7b80\u6d01\u660e\u4e86\uff0c\u9002\u5408\u7b80\u5355\u7684\u66ff\u6362\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\n- \u7ed3\u5408\u6b63\u5219\u8868\u8fbe\u5f0f<\/li>\n<\/ol>\n
\u540c\u6837\u5730\uff0c\u5982\u679c\u9700\u8981\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u53ef\u4ee5\u7ed3\u5408re.sub()<\/code>\uff1a<\/p>\n<\/p>\nimport re<\/p>\nfruits = ["apple", "banana", "cherry"]<\/p>\n
new_fruits = [re.sub(r"a", "o", fruit) for fruit in fruits]<\/p>\n
print(new_fruits) # \u8f93\u51fa: ['opple', 'bonono', 'cherry']<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u9700\u8981\u66f4\u590d\u6742\u7684\u66ff\u6362\u89c4\u5219\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u516d\u3001\u66ff\u6362\u5b57\u5178\u4e2d\u7684\u5b57\u7b26\u4e32<\/p>\n<\/p>\n
\u5728\u5b57\u5178\u4e2d\u8fdb\u884c\u5b57\u7b26\u4e32\u66ff\u6362\u65f6\uff0c\u53ef\u4ee5\u904d\u5386\u5b57\u5178\u5e76\u5bf9\u6bcf\u4e2a\u503c\u8fdb\u884c\u66ff\u6362\uff1a<\/p>\n<\/p>\n
\n- \u904d\u5386\u5b57\u5178\u5e76\u66ff\u6362<\/li>\n<\/ol>\n
data = {"name": "Alice", "place": "Wonderland"}<\/p>\nnew_data = {key: value.replace("a", "o") for key, value in data.items()}<\/p>\n
print(new_data) # \u8f93\u51fa: {'name': 'Aloce', 'place': 'Wonderlond'}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u5bf9\u5b57\u5178\u4e2d\u7684\u6240\u6709\u503c\u8fdb\u884c\u7edf\u4e00\u66ff\u6362\u3002<\/p>\n<\/p>\n
\n- \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f<\/li>\n<\/ol>\n
\u540c\u6837\u5730\uff0c\u6b63\u5219\u8868\u8fbe\u5f0f\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5b57\u5178\u4e2d\u7684\u5b57\u7b26\u4e32\u66ff\u6362\uff1a<\/p>\n<\/p>\n
import re<\/p>\ndata = {"name": "Alice", "place": "Wonderland"}<\/p>\n
new_data = {key: re.sub(r"a", "o", value) for key, value in data.items()}<\/p>\n
print(new_data) # \u8f93\u51fa: {'name': 'Aloce', 'place': 'Wonderlond'}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u9002\u5408\u9700\u8981\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u590d\u6742\u66ff\u6362\u7684\u60c5\u51b5\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u591a\u79cd\u65b9\u6cd5\uff0cPython3\u4e3a\u5b57\u7b26\u4e32\u66ff\u6362\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u6ee1\u8db3\u4ece\u7b80\u5355\u5230\u590d\u6742\u7684\u5404\u79cd\u66ff\u6362\u9700\u6c42\u3002\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\uff0c\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u5982\u4f55\u5728Python3\u4e2d\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\u6216\u5b50\u4e32\uff1f<\/strong>
\u5728Python3\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()<\/code>\u65b9\u6cd5\u6765\u66ff\u6362\u7279\u5b9a\u5b57\u7b26\u6216\u5b50\u4e32\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709\u201capple\u201d\u66ff\u6362\u4e3a\u201corange\u201d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a <\/p>\noriginal_string = "I like apple and apple pie."\nnew_string = original_string.replace("apple", "orange")\nprint(new_string) # \u8f93\u51fa: I like orange and orange pie.\n<\/code><\/pre>\n\u6b64\u65b9\u6cd5\u53ef\u4ee5\u6307\u5b9a\u66ff\u6362\u7684\u6b21\u6570\uff0c\u5982\u679c\u4e0d\u4f20\u5165\u8be5\u53c2\u6570\uff0c\u5219\u4f1a\u66ff\u6362\u6240\u6709\u5339\u914d\u9879\u3002<\/p>\n
\u5728Python3\u4e2d\u5982\u4f55\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u590d\u6742\u7684\u66ff\u6362\uff1f<\/strong>
\u82e5\u9700\u8981\u8fdb\u884c\u66f4\u590d\u6742\u7684\u66ff\u6362\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528re<\/code>\u6a21\u5757\u4e2d\u7684sub()<\/code>\u51fd\u6570\u3002\u6b64\u65b9\u6cd5\u652f\u6301\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u5141\u8bb8\u60a8\u8fdb\u884c\u6a21\u5f0f\u5339\u914d\u548c\u66ff\u6362\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06\u66ff\u6362\u6240\u6709\u6570\u5b57\u4e3a\u201c#\u201d\uff1a <\/p>\nimport re\n\noriginal_string = "My phone number is 123-456-7890."\nnew_string = re.sub(r'\\d+', '#', original_string)\nprint(new_string) # \u8f93\u51fa: My phone number is #-#-#.\n<\/code><\/pre>\n\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u60a8\u80fd\u591f\u66f4\u7075\u6d3b\u5730\u5b9a\u4e49\u9700\u8981\u66ff\u6362\u7684\u5185\u5bb9\u3002<\/p>\n
\u5982\u4f55\u5728Python3\u4e2d\u66ff\u6362\u5217\u8868\u4e2d\u7684\u591a\u4e2a\u5143\u7d20\uff1f<\/strong>
\u5982\u679c\u60a8\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u5e76\u5e0c\u671b\u540c\u65f6\u66ff\u6362\u5176\u4e2d\u7684\u591a\u4e2a\u5143\u7d20\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u7ed3\u5408replace()<\/code>\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\u5c06\u540c\u65f6\u66ff\u6362\u201capple\u201d\u548c\u201cbanana\u201d\uff1a <\/p>\nfruits = ["apple", "banana", "cherry", "apple pie", "banana split"]\nnew_fruits = [fruit.replace("apple", "orange").replace("banana", "grape") for fruit in fruits]\nprint(new_fruits) # \u8f93\u51fa: ['orange', 'grape', 'cherry', 'orange pie', 'grape split']\n<\/code><\/pre>\n\u8fd9\u79cd\u65b9\u6cd5\u80fd\u591f\u6709\u6548\u5730\u5904\u7406\u591a\u4e2a\u66ff\u6362\uff0c\u4f7f\u4ee3\u7801\u7b80\u6d01\u4e14\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python3\u4e2d\uff0c\u5b57\u7b26\u4e32\u66ff\u6362\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\u5b9e\u73b0\uff1a\u4f7f\u7528str.replace()\u65b9\u6cd5\u3001\u6b63\u5219\u8868\u8fbe\u5f0fre.s […]","protected":false},"author":3,"featured_media":973389,"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\/973382"}],"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=973382"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/973382\/revisions"}],"predecessor-version":[{"id":973392,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/973382\/revisions\/973392"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/973389"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=973382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=973382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=973382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"python3\u5982\u4f55\u66ff\u6362\"](\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24195607\/1f3a45a8-4876-4607-9fdb-096981c35cdb.webp\")
<\/p>\n