CODEWITHSUNDEEP
python
Registered User
Registered User

Reputation: 5361

How to use script in interactive shell

I wrote following python program

#! /usr/bin/python
def checkIndex(key):
    if not isinstance(key, (int, long)): raise TypeError
    if key<0: raise IndexError

class ArithmeticSequence:
    def __init__(self, start=0, step=1):
        self.start = start      # Store the start value
        self.step = step        # Store the step value
        self.changed = {}       # No items have been modified
    def __getitem__(self, key):
        checkIndex(key)
        try: return self.changed[key]
        except KeyError:
            return self.start + key*self.step
    def __setitem__(self, key, value):
        checkIndex(key)
        self.changed[key] = value

the program is my.py when I do 

chmod +x my.py
python my.py

I am back to bash shell here after this step I open a python shell

user@ubuntu:~/python/$ python
Python 2.7.3 (default, Aug  1 2012, 05:14:39) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.

>>> s=ArithmeticSequence(1,2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'ArithmeticSequence' is not defined

How do I give input to my program and run it because it was saved in vi

Upvotes: 0

Views: 156

Answers (3)

Velimir Mlaker
Velimir Mlaker

Reputation: 10955

The command that you want to run is:

python -i my.py

That will parse my.py and define the name ArithmeticSequence, and drop you into the Python shell where you can use your objects interactively:

>>> s=ArithmeticSequence(1,2)
>>>

Upvotes: 0

Ayaz Ahmad
Ayaz Ahmad

Reputation: 71

Put your file my.py in PYTHONPATH then

from my import ArithmeticSequence
s=ArithmeticSequence(1,2)

Upvotes: 1

Stoof
Stoof

Reputation: 747

Well you either have to run this as a program using

if __name__ == 'main':
    # Your code goes here. This will run when called from command line.

or if you are in the python interpreter you have to import "my" with:

>>> import my

Upvotes: 0

Related Questions