如何在不执行python脚本的语法上检查语法?
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28-09-2019 - |
题
我曾经用过 perl -c programfile
检查PERL程序的语法,然后在不执行的情况下退出。对于Python脚本而言,是否有一种等效的方法?
解决方案
您可以通过编译语法来检查该语法:
python -m py_compile script.py
其他提示
import sys
filename = sys.argv[1]
source = open(filename, 'r').read() + '\n'
compile(source, filename, 'exec')
保存为checker.py并运行 python checker.py yourpyfile.py
.
也许有用的在线检查器PEP8: http://pep8online.com/
这是另一个解决方案,使用 ast
模块:
python -c "import ast; ast.parse(open('programfile').read())"
从Python脚本中干净地进行操作:
import ast, traceback
filename = 'programfile'
with open(filename) as f:
source = f.read()
valid = True
try:
ast.parse(source)
except SyntaxError:
valid = False
traceback.print_exc() # Remove to silence any errros
print(valid)
由于某种原因(我是Py newbie ...)-m呼叫不起作用...
所以这是一个bash包装器的功能...
# ---------------------------------------------------------
# check the python synax for all the *.py files under the
# <<product_version_dir/sfw/python
# ---------------------------------------------------------
doCheckPythonSyntax(){
doLog "DEBUG START doCheckPythonSyntax"
test -z "$sleep_interval" || sleep "$sleep_interval"
cd $product_version_dir/sfw/python
# python3 -m compileall "$product_version_dir/sfw/python"
# foreach *.py file ...
while read -r f ; do \
py_name_ext=$(basename $f)
py_name=${py_name_ext%.*}
doLog "python3 -c \"import $py_name\""
# doLog "python3 -m py_compile $f"
python3 -c "import $py_name"
# python3 -m py_compile "$f"
test $! -ne 0 && sleep 5
done < <(find "$product_version_dir/sfw/python" -type f -name "*.py")
doLog "DEBUG STOP doCheckPythonSyntax"
}
# eof func doCheckPythonSyntax
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