I am trying to execute very basic Python code containing error handling as a Bash script, but while the code seems to run OK in Python, the code generates problems when executed under Bash.

#!/usr/bin/python 

x = input('Enter your number:  ')     

try:

    x = float(x)

    print('Your number multiplied by 2 is:  ', x*2) 

except ValueError:

    print('not a valid choice')

    x == 0

This is the error report from Bash:

Enter your number:  -p Traceback (most recent call last):

  File "cycle.py", line 3, in <module>

    x=input('Enter your number:  ')

  File "<string>", line 1, in <module>

NameError: name 'p' is not defined

As I understand the input error had to be handled by Python first and then it would return 0 exit status to Bash, but apparently this is not the case?

1. Is my code all right?


2. Is there a way to force Python to handle the error first without evoking Bash?


3. Is there any other critical pitfalls when running Python programs (presumably correctly written) as Bash scripts?