Problem about python import with error
Question: I have write a small python module with one class and two functions. The
skeleton of the module is as following:

    
    
    #file name: test_module.py
    class TestClass:
      @classmethod
      def method1(cls, param1):
        #to do something
        pass
    
      def __init__(self, param1):
        #to do something
        ...
    def fun1(*params):
      #to do something
      ...
    
    def fun2(*params):
      #to do something
      ...
    

Another py file is a small script which imports function and class from the
module, as following:

    
    
        import sys
        from test_module import TestClass, fun1, fun2
    
        def main(sys_argv):
          li = range(5)
          inst1 = TestClass(li)
          fun1(inst1)
          fun2(inst1)
          return 
    
        if __name__ == "__main__":
          main(sys.argv) 
    

But when I execute the script, it is broken with following message:

  * from: can't read /var/mail/test_module
  * ./script.py: line 4: syntax error near unexpected token `('

  * ./script.py: line 4: `def  
main(sys_argv):'

I am not sure what the problem is. Is it a problem with import? But when I try
to import the module in ipython, everything is just ok.


Answer: Add a proper shebang line to your "small script". It's being interpreted as a
shell script.

