repl :要添加的文本 string :要替换的文本 代码: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # 导入 re 模块 import re # 创建一个函数来替换文本 def replacetext(search_text,replace_text): # 以读写模式打开文件 with open('SampleFile.txt','r+') as f: # 读取文件数据并将其存储在文件...
1. replace法 利用replace函数，对于字符串中的三个字符进行多次替换，不需要导入其它的包，可以一次替换...
# Write String to Text File in Text Mode text_file = open("D:/work/20190810/sample.txt", "wt") n = text_file.write('Python, Python~') text_file.close() print(n)执行和输出: 再次打开该文件查看其内容:3. 移除文件在Python 里移除一个文件可以调用 os 库的remove() 方法,将该文件的路径...
msg2 = msg.replace('fox', 'wolf') print(msg2) In the example, both occurrences of word 'fox' are replaced with 'wolf'. $ ./replacing.py There is a wolf in the forest. The wolf has red fur. Alternatively, we can use the str.replace method. It takes the string on which we do...
# Write String to Text File in Text Mode text_file = open("D:/work/20190810/sample.txt", "wt") n = text_file.write('Python, Python~') text_file.close() print(n) 1. 2. 3. 4. 5. 执行和输出: 再次打开该文件查看其内容: ...
❯ python3 main.py ❯ cat file.txt test old test
想处理中间的空格,使用replace()方法或者是用正则表达式替换 >>> s.replace(' ', '') 'helloworld' >>> import re re.sub('\s+', ' ', s) 'hello world' >>> 将字符串 strip 操作和其他迭代操作相结合,利用生成器表达式 with open(filename) as f: lines = (line.strip() for line in f)...
fileinput模块是Python内置的用于对文件进行操作的模块,可以方便地读取和编辑文件内容。下面是使用fileinput模块进行文件内容替换的示例代码: importfileinput# 打开文件并进行替换withfileinput.FileInput('example.txt',inplace=True,backup='.bak')asfile:forlineinfile:# 替换字符串print(line.replace('old_string'...
'string learn' >>> str.replace('n','N') 'striNg lEARN' >>> str.replace('n','N',1) 'striNg lEARn' >>> str.strip('n') #删除字符串首尾匹配的字符,通常用于默认删除回车符 'string lEAR' >>> str.lstrip('n') #左匹配 'string lEARn' >>> str.rstrip('n') #右匹配 'stri...
""" import http.client import string import re import os import sys import xml.etree.ElementTree as etree import stat import logging import traceback import glob import ops import ipaddress from hashlib import sha256 from urllib.request import urlretrieve from urllib.parse import urlparse, urlun...