这是一个问题,我可以从文件夹中删除行,但不能选择它们作为它们的相似方式。
例如,我有一个包含3000行等的.json文件,我需要删除以"navig"
开头的行。我们如何修改Python代码?
with open("yourfile.txt", "r") as f:
lines = f.readlines()
with open("yourfile.txt", "w") as f:
for line in lines:
if line.strip("\n") != "nickname_to_delete":
f.write(line)
(该代码来自另一个答案。)
答案 0 :(得分:0)
此答案仅适用于JSON文件,在这种情况下,这是完成工作的一种可靠方法:
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)
testJson[key] = jsonFile[key]
print('Length of JSON object after cleaning: ', len(testJson.keys()))
with open('cleanedJson', 'w') as jf:
json.dump(testJson, jf)