Python OS更换路径
在调用CMD中的Python文件时，我正在尝试更改目录，但它不起作用！ 我尝试了所有类型的斜线＆amp;后斜线＆amp;逃脱，有时在代码运行时，目录不会更改，并且在启动PY文件的地方保持不变，有时代码不运行，我有此错误错误
import os
#import sys
os.chdir('%SystemRoot%/Users/%username%/AppData/Local/Google/Chrome/User Data')
os.system('cd \"%SystemRoot%\\Users\\%username%\\AppData\\Local\\Google\\Chrome\\User Data\"')
我试图更改系统变量％system root％和％username％tos c：/and user2（我的系统根和用户名），但仍然不工作！ 谁能在他的计算机上尝试并告诉我该更改PLS？ 谢谢 ！
I'm trying to change directory when calling a python file in cmd but it's not working !
I tried all types of slashes & back slashes & escaping, sometimes when the code runs, the directory isn't changing and stays the same where i start the py file and sometimes the code isn't running and i have this error Error
import os
#import sys
os.chdir('%SystemRoot%/Users/%username%/AppData/Local/Google/Chrome/User Data')
os.system('cd \"%SystemRoot%\\Users\\%username%\\AppData\\Local\\Google\\Chrome\\User Data\"')
I tried to change the system variables %SystemRoot% and %username% to words like C:/ and user2 (my system root and user name ) but still not working !
Can anyone try it in his computer and tell me what to change pls ?
Thanks !
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Python不会自动扩展shell变量，例如
％systemRoot％和％用户名的实际值，这就是导致您遇到的错误的原因。尝试OS.CHDIR（OS.PATH..EXPANDVARS（OS.PATH.Expanduser）（'％SystemRoot％/users/％用户名％/appdata/local/local/google/google/chrome/user data'））for第一行应该将％用户名％和％SystemRoot％变量扩展到有效的路径。编辑：对不起，我误解了您的问题。虽然这将照顾您遇到的错误，但您不能从脚本中更改外壳的工作目录；请参阅您的问题下的评论，作者：
Python does not automatically expand shell variables like
%SystemRoot%and%username%to their actual values, this is what caused the error you were getting. Tryos.chdir(os.path.expandvars(os.path.expanduser('%SystemRoot%/Users/%username%/AppData/Local/Google/Chrome/User Data')))for the first line as this should expand the%username%and%SystemRoot%variables to a valid path.EDIT: Sorry, I misunderstood your question. While this will take care of the error you were getting, you cannot change the shell's working directory from your script; see comment under your question by Ulrich Eckhardt