ispy3.py

#!/usr/bin/env python3
# coding: utf-8
"""
Author       : weaming
Created Time : 2018-07-12 14:09:32

Parse python source code syntax to determine is python2 or python3
"""
import os
import ast

VERBOSE = os.getenv('VERBOSE')

def test_source_code_compatible(code_data):
    try:
        return ast.parse(code_data)
    except SyntaxError as e:
        if VERBOSE:
            print('exception: {}'.format(e))
        return False


if __name__ == '__main__':
    import sys
    fp_list = sys.argv[1:]

    result = True
    for fp in fp_list:
        if test_source_code_compatible(open(fp).read()):
            if VERBOSE:
                print(fp, True, file=sys.stderr)
        else:
            result = False
            if VERBOSE:
                print(fp, False, file=sys.stderr)

    if result:
        sys.exit(0)
    else:
        sys.exit(1)

shell function

is-python3-project () {
	find ${1:=.} -type f -name '*.py' | xargs ispy3
}