How do I assign values in text file to an array inside python function and use it as global?

Question

I am using windows10 and python 2.7.14. Running the python scripts in command prompt. I want to read some lines in text file and compare with some text, if it matches it should be stored in array. And also I want the array should be global. But In my script the I am not able to store the contents in array. How do I achieve this.

#This method is to reading logfile and saving the different datas in different lists
def Readlogs(Filename):
        datafile = file(Filename)
        for line in datafile:
            if "login = " in line:
                print(line)
                trial=line
                s2 = "= "
                ArrayLogin = trial[trial.index(s2) + len(s2):]
                print(ArrayLogin)
            print(ArrayLogin)
            if "Overlay = " in line:
                print(line)
                trial2=line
                s2 = "= "
                arrayOverlay = trial2[trial2.index(s2) + len(s2):]
                print(arrayOverlay)
    Readlogs(WriteFileName)

If you want to declare your variables outside function and use them inside, then probably you may get some insights here https://stackoverflow.com/questions/423379/using-global-variables-in-a-function-other-than-the-one-that-created-them — Vivek Harikrishnan, Dec 26 '17 at 06:49

Rakesh · Answer 1 · 2017-12-26T07:02:01.667

0

You can declare empty arrays and append items to it.

#This method is to reading logfile and saving the different datas in different lists
def Readlogs(Filename):
        #empty array
        ArrayLogin, arrayOverlay  = [], []
        datafile = file(Filename)
        for line in datafile:
            if "login = " in line:
                print(line)
                trial=line
                s2 = "= "
                ArrayLogin.append(trial[trial.index(s2) + len(s2):])
                print(ArrayLogin)
            print(ArrayLogin)
            if "Overlay = " in line:
                print(line)
                trial2=line
                s2 = "= "
                arrayOverlay.append(trial2[trial2.index(s2) + len(s2):])
                print(arrayOverlay)

        return ArrayLogin, arrayOverlay

arr1, arr2, = Readlogs(WriteFileName)

edited Dec 26 '17 at 07:02

answered Dec 26 '17 at 06:46

Rakesh

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can the array be used outside the function as well? – Dec 26 '17 at 06:57
You can return both the arrays and use it outside the function. I have updated the code above. – Rakesh Dec 26 '17 at 07:01
can't we declare it as global? – Dec 26 '17 at 07:04

How do I assign values in text file to an array inside python function and use it as global?

1 Answers1