我已经在python的类中定义了以下函数，我正在尝试从外部源编译python代码。
python代码进入，写入文件，然后将文件发送到以下函数。
当我尝试将函数调用为：
self._check_code_for_errors(source_file)
它不执行except块，在这里我捕获了SyntaxError异常。
def _check_code_for_errors(self, source_file):
try:
file_ = open(source_file.name, 'r')
py_compile.compile(file_.name)
except SyntaxError:
return {'errors': 'You have a problem in your syntax'}
except (OSError, IOError):
return {'errors': 'Some error has occurred, please try again'}
更新：
class ValidatePythonCodeViewSet(generics.CreateAPIView):
parser_classes = (PlainTextParser, )
"""
The view set below accepts code from post request, executes it and then
returns the appropriate results (error or output)
"""
def _write_code_to_file(self, source):
# file is a reserved word in python 2.x, so using file_
with open('tempPythonCode.py', 'w') as file_:
file_.write(source)
return file_
def _check_code_for_errors(self, source_file):
try:
file_ = open(source_file.name, 'r')
py_compile.compile(file_.name, doraise=True)
except py_compile.PyCompileError:
return {'errors': 'You have a problem in your syntax'}
def post(self, request, *args, **kwargs):
source = request.data
if not source:
raise InformationMissingInRequestError()
else:
source_file = self._write_code_to_file(source)
response = self._check_code_for_errors(source_file)
if response.get('errors', None):
return Response(response, status=status.HTTP_400_BAD_REQUEST)
else:
#execute code here and return
pass
return Response(response, status=status.HTTP_200_OK)
我提出的要求是：
追溯
File "tempPythonCode.py", line 1
import os\nprint 'hi
^
SyntaxError: unexpected character after line continuation character
Internal Server Error: /api/python/
Traceback (most recent call last):
File "/home/dhruuv/.virtualenvs/pythoneval/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 149, in get_response
response = self.process_exception_by_middleware(e, request)
File "/home/dhruuv/.virtualenvs/pythoneval/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 147, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/dhruuv/.virtualenvs/pythoneval/local/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/home/dhruuv/.virtualenvs/pythoneval/local/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/home/dhruuv/.virtualenvs/pythoneval/local/lib/python2.7/site-packages/rest_framework/views.py", line 466, in dispatch
response = self.handle_exception(exc)
File "/home/dhruuv/.virtualenvs/pythoneval/local/lib/python2.7/site-packages/rest_framework/views.py", line 463, in dispatch
response = handler(request, *args, **kwargs)
File "/home/dhruuv/projects/PythonEval/api/views.py", line 44, in post
if response.get('errors', None):
AttributeError: 'NoneType' object has no attribute 'get'
[10/Feb/2016 09:45:44] "POST /api/python/ HTTP/1.1" 500 87401
更新2
我在ipdb中尝试过，效果很好！
In [5]: try:
py_compile.compile('testing.py', doraise=True)
except py_compile.PyCompileError:
print 'dfsssssssssssss'
...:
dfsssssssssssss
任何帮助表示赞赏。
最佳答案
SyntaxError不是运行时错误，您无法在代码中捕获它。但是，py_compile不会引发SyntaxError。如the documentation所示，它会升高py_compile.PyCompileError。
编辑因此，这里的代码有些错误。首先，再次如文档所示，您需要传递doraise=True进行编译，以使其产生错误。
另一个异常正在发生，因为如果成功，您不会从_check_code_for_errors返回任何内容。您可能应该返回一个空字典。
关于python - 使用py_compile时未捕获SyntaxError，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/35310402/