Python 类型错误：execv() arg 2 必须只包含字符串
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TypeError: execv() arg 2 must contain only strings
提问by user2955256
I am getting the following error when running the script below,can anyhelp to identify what the problem is and how to overcome it
运行下面的脚本时出现以下错误，可以帮助确定问题是什么以及如何克服它
import subprocess
import sys
import os
def main ():
to = ''
ssh_command = ["ssh", "-p", "29418", "review-android.quicinc.com", "gerrit",
"query", "--format=JSON", "--current-patch-set",
"--commit-message", "--files", ]
with open('gerrit_output.txt', 'a') as fp:
with open('caf_gerrits.txt','r') as f :
for gerrit in f :
print gerrit
result = subprocess.check_output(ssh_command + [gerrit, ])
print result
fp.write(result)
if __name__ == '__main__':
main()
ERROR:-
错误：-
545804
545804
Traceback (most recent call last):
File "test.py", line 20, in <module>
File "test.py", line 15, in main
File "/usr/lib/python2.7/subprocess.py", line 537, in check_output
process = Popen(stdout=PIPE, *popenargs, **kwargs)
File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
raise child_exception
TypeError: execv() arg 2 must contain only strings
回答by mgilson
The third element in ssh_commandis an integer. It needs to be a string.
in 的第三个元素ssh_command是一个整数。它必须是一个字符串。
e.g:
例如：
ssh_command = ["ssh", "-p", 29418, ...
# ^ problem
And the solution is simple, just add some quotes:
解决方案很简单，只需添加一些引号：
ssh_command = ["ssh", "-p", "29418", ...
# ^Now it's a string.
回答by misakm
First you need to add the quotes around 29418as mgilson mentioned. Second let's break down what you're trying to run:
首先，您需要29418像 mgilson 提到的那样添加引号。其次，让我们分解您要运行的内容：
ssh_command = ["ssh", "-p", 29418, "review-android.company.com", "gerrit",
"query", "--format", "JSON", "--current-patch-set",
"--commit-message", "--files", ]
That equals
那等于
ssh -p 29418 review-android.company.com gerrit query --format JSON --current-patch-set --commit-message --files
(then I'm assuming you have filenames in your caf_gerrits.txt file which get appended at the end)
One thing that pops out at me is that you may want to say --format=JSONin which case your elements in the ssh_commandarray should be combined as [..., "--format=JSON", ...]. The other thing you may want to do is print resultafter your result=line to help with the debugging.
我突然想到的一件事是您可能想说--format=JSON在这种情况下ssh_command数组中的元素应该组合为[..., "--format=JSON", ...]. 您可能想要做的另一件事是print result在您的result=线路之后帮助调试。
