Is there a possibility to check on Runtime errors? It is clear from a string that pri1nt is a function and it is not defined in this string.
import ast
def is_valid_python(code):
try:
ast.parse(code)
except SyntaxError:
return False
return True
mycode = 'pri1nt("hello world")'
is_valid_python(mycode) # true
exec(mycode) # NameError: name 'pri1nt' is not defined
Try using BaseException instead of SyntaxError. This would check every type of python error, including NameError. Also, because ast.parse never raises any errors, you should use exec instead.
So it should be like this:
def is_valid_python(code):
try:
exec(code)
except BaseException:
return False
Return True
mycode = 'pri1nt("hello world")'
is_valid_python(mycode) # false
maybe something like this?
import subprocess
script_string = "prnt(\"Hello World!\")"
proc = subprocess.Popen(["python"], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
res = proc.communicate(bytes(script_string, "UTF-8"))
what it basically does is pipeing the string to a python interpreter. if no error, then the script_string is valid.
Edit: res will contain (stdout_data, stderr_data) (see https://docs.python.org/3/library/subprocess.html#subprocess.Popen.communicate)
while True: pass, which runs with no errors.
NameError: name 'true' is not defined is my outputstring_script gets executed. thats probably not intended.
pr1ntis a perfectly valid name in Python; the fact that it is not defined means there would be a NameError. But generally this kind of static analysis is hard to do in Python without actually executing the code.astmodule you can do some of the stuff that I imagine you try to achieve, e.g. check if names can resolve.from os import environ; print(environ['FOO'])produce a key error? Nobody knows, unless you run the code.