calling function that is in different modules python

Question

I am writing many small python scripts and keeping in one directory and i am calling them in different scripts

Below is the script and it is calling function that has saved in another director acc_repo:

from acc_repo import col
import logging
import getpass
col.col()
dc = raw_input(OKGREEN + "Choose DataCenter:" + ENDC)
    File "ucs_qa.py", line 21, in <module>
    dc = raw_input(OKGREEN + "Choose DataCenter:" + ENDC)
NameError: name 'OKGREEN' is not defined

function that is saved in acc_repo directory

def col ():
    global HEADER
    global OKBLUE
    global OKGREEN
    global WARNING
    global FAIL
    global ENDC
    global BOLD
    global UNDERLINE
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'

How do i fix the error? Is i am in right track in terms handling many small python scripts. Please advice and help to fix the issue

Where is `OKGREEN` defined? You need to import it from there. — Peter Wood, Apr 23 '17 at 14:43
col() not working and OKGREEN is saved in function and saved in different directory — asteroid4u, Apr 23 '17 at 14:47
I highly recommend checking this (http://stackoverflow.com/questions/4693120/use-of-global-keyword-in-python) out. If you can get around using global variables I would advise that. — Chris, Apr 23 '17 at 14:51

score 0 · Answer 1 · answered Apr 23 '17 at 14:45

0

Try

col.OKGREEN

Just like functions, variables in different files need to know where they reside in. This allows developers to create same named variables without bothering what library they are importing.

answered Apr 23 '17 at 14:45

Siddhant

143
1
13

score 0 · Answer 2 · answered Apr 23 '17 at 14:45

Your function col.col() declares global variables, but they are still in the scope of the module in which they are declared. So after calling col.col(), you can access the declared variables by qualifying the name with the col module. For example, you can access OKGREEN with col.OKGREEN

weitang114 · Answer 3 · 2017-04-23T15:32:38.230

(updated the answer) Try this:

from acc_repo import col
import logging
import getpass

col.col()

# import the OKGREEN.. etc after col()
from acc_repo.col import * 

dc = raw_input(OKGREEN + "Choose DataCenter:" + ENDC)

The global variables are intialized after col() is called.

But this is more like a fast workaround to make your code work. I guess you tried to make the global variables "global" in main.py by calling col(), but they are actually only global in the scope of col.py. Therefore, the from acc_repo.col import * is still necessary after col() is called.

To achieve what you want, modify col.py to (as @Maurice's answer):

HEADER = '\033[95m'
OKBLUE = '\033[94m'
OKGREEN = '\033[92m'
WARNING = '\033[93m'
FAIL = '\033[91m'
ENDC = '\033[0m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'

then remove the line col.col(), and keep the other as they are.

File "ucs_qa.py", line 20, in col() TypeError: 'module' object is not callable — asteroid4u, Apr 23 '17 at 14:52

score 0 · Answer 4 · answered Apr 23 '17 at 15:10

Dont use global variables at all !

acc_repo.py:

HEADER = '\033[95m'
OKBLUE = '\033[94m'
OKGREEN = '\033[92m'
WARNING = '\033[93m'
FAIL = '\033[91m'
ENDC = '\033[0m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'

main.py:

from acc_repo import *
import logging
import getpass

dc = raw_input(OKGREEN + "Choose DataCenter:" + ENDC)
print(dc)

calling function that is in different modules python

4 Answers4