问 用Python删除.json文件中的特定行？

EN

你可以这样做：

with open("yourfile.txt", "r") as f:
    lines = f.readlines()
with open("yourfile.txt", "w") as f:    
    for line in lines:
        if not line.startswith(YOUR_SEARCH_STRING):
            f.write(line)

或者，如果您只想写入文件一次：

with open("yourfile.txt", "r") as f:
    lines = f.readlines()
lines_to_write = [line for line in lines if not line.startswith(YOUR_SEARCH_SRING)]
with open("yourfile.txt", "w") as f:    
    f.write(''.join(lines_to_write))

这个答案只适用于JSON文件，在这种情况下，这是一种健壮的工作方式：

import json
with open('yourJsonFile', 'r') as jf:
    jsonFile = json.load(jf)
print('Length of JSON object before cleaning: ', len(jsonFile.keys()))
testJson = {}
keyList = jsonFile.keys()
for key in keyList:
    if not key.startswith('SOMETEXT'):
        print(key)