NameError:未定义全局名称“shlex”

Question

我有以下代码，即使定义了shlex，也会遇到以下错误。

import shlex
import sys
import subprocess
def main ():

    branch_name = sys.argv[1]
    print "branch_name"
    print branch_name
    print "start repo..."
    RepoInitCmd =  'repo init -u git://git.quicinc.com/platform/manifest.git -b ' + branch_name
    proc = subprocess.Popen(shlex.split(RepoInitCmd), stderr=subprocess.PIPE)
    out, error = proc.communicate()
    print "Done repo..."

if __name__ == '__main__':
    main()

错误：-

Traceback (most recent call last):
  File "repoinit.py", line 15, in <module>
    if __name__ == '__main__':
  File "repoinit.py", line 10, in main
    RepoInitCmd =  'repo init -u git://git.quicinc.com/platform/manifest.git -b ' + branch_name
NameError: global name 'shlex' is not defined

Answer 1

如果未定义shlex名称，则意味着您尚未在代码中导入该模块。这意味着真正的代码与您在问题中编写的代码不匹配。如果没有安装shlex，它将在import shlex行上失败。

Answer 2

重构以将shlex.split调用移出subprocess.Popen可能是这里的解决方案。我在调用subprocess.run时遇到了同样的错误。

import shlex
shlex.split('repo init -u git://git.quicinc.com/platform/manifest.git -b ' + branch_name)
proc = subprocess.Popen(RepoInitCmdArgs, stderr=subprocess.PIPE)