Question

I m试图执行谷歌灯。在我的一组档案上打字,并将结果收集到一个记录档案中。然而,我未能在分处理模块上安装。我目前的法典在这里是:

import os, subprocess

rootdir = "C:/users/me/Documents/dev/"
srcdir = "project/src/"

with open(rootdir+srcdir+"log.txt", mode= w , encoding= utf-8 ) as logfile:
    for subdir, dirs, files in os.walk(rootdir+srcdir):
        for file in files:
            if file.endswith(".h") or file.endswith(".cpp"):
                filewithpath=os.path.join(subdir, file)
                cmd=[ c:/Python27/python.exe , C:/users/me/Documents/dev/cpplint.py , --filter=-whitespace,-legal,-build/include,-build/header_guard/ , filewithpath]               
                output = subprocess.check_output(cmd)
                logfile.write(output.decode( ascii ))

采用上述法典将产生一个错误:

  File "C:Python32libsite.py", line 159
    file=sys.stderr)
        ^ SyntaxError: invalid syntax Traceback (most recent call last):   File "C:UsersmeDocumentsdevprojectsrcverifier.py", line 19, in <module>
    output = subprocess.check_output(cmd)   File "C:Python32libsubprocess.py", line 511, in check_output
    raise CalledProcessError(retcode, cmd, output=output) subprocess.CalledProcessError: Command  [ c:/Python27/python.exe ,  C:/users/me/Documents/dev/cpplint.py ,  --filter=-whitespace,-legal,-build/include,-build/header_guard/ ,  C:/users/me/Documents/dev/project/src/aboutdialog.cpp ]  returned non-zero exit status 1

如果我用一个更简单的东西来替代 cm子:

cmd=[ C:/WinAVR-20100110/bin/avr-gcc.exe , --version ]

然后,文字按预期运作。

I have also tried to use a single command string instead of a list of strings as cmd, but the result is the same. When debugging the code, I copied the list-of-strings-turned-into-the-command-line-command from the debugger and ran it in the Windows command line, and the command ran as expected.

The Python interpreter running my script is Python 3.2. Any tips are greatly appreciated.

Answer 1

浏览像cpplint.py 只是从非零返回代码中提取的,例如,如果在源文档中发现错误或“倾斜”,就会这样做。

见。请注意,如果指挥部执行返回non-zerowal Code,则提出subprocess.CalledProcessError。

可以通过观看<代码>CalledProcessError,如:

try:
    output = subprocess.check_output(cmd)
except subprocess.CalledProcessError as e:
    # ack!  cpplint.py failed... report an error to the user?

www.un.org/Depts/DGACM/index_spanish.htm

<>SyntaxError 看来是其中的关键,很可能是由<代码>C:Python32lib在您的PYTHONPATH(或者说,如果是你目前的工作名录)中产生的。

灰色译员(自1.52-ish)在开始时自动运行<编码> 进口场。因此,当情况发生时,以及你的手稿执行:

c:/Python27/python.exe C:/users/me/Documents/dev/cpplint.py ...

然后,Python 2.7 口译人员将首先找到C:Python32libsite.py,并试图在:Python27libsite.py上装载这些字句,而不是放在(推定)上。问题是,Salph 3 s site.py 含有与Salv 2相悖的辛塔克斯,因此,通过<代码>subprocess.check_output而启动的进程与SyntaxError一起失败,甚至有机会操作cpplint,该编码传播。 CalledProcessError。

解决办法? Make Python 换言之,确保<条码>C:Python32lib,在PYTHONPATH传译员时,不在搜索过程中。

One way to do this in your case is to set an explicit environment when launching the process, e.g.:

python2_env = {"PYTHONPATH": "path/to/python2/stuff:..."}
output = subprocess.check_output(cmd, env=python2_env)

Answer 2

谨请您主持第一期工作。

pipe = subprocess.Popen([cmd, options],stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
stdout, stderr = pipe.communicate()

你们会知道,自呼吁程序以来,错误究竟是什么。只有在离国法典是非零时,才提出过错误。

Answer 3

我这样做的办法是用下文取代倒数主数(我ite开错误,以获得适当的卷宗):

errorlog = sys.stderr
sys.stderr = open("errorlog.csv","w")
sys.stderr.write("File;Line;Message;Category;Confidence
")
for filename in filenames:
  ProcessFile(filename, _cpplint_state.verbose_level)
_cpplint_state.PrintErrorCounts()
sys.exit(_cpplint_state.error_count > 0)
sys.stdout = errorlog
sys.stderr.close()

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