Python for-loop

Question

I am trying to write a contacts program and I have to write some information to txt file. I create a list and two dictionaries

name = ['charles', 'frank', 'chris']
phonenumbers = {'charles' : '12345', 'frank' : '23456', 'chris' : '34567'}
emails = {'charles' : '[email protected]', 'frank' : '[email protected]', 'chris' : '[email protected]'}

and I have two variables

ld_names = names, phonenumbers, emails
files = ('name_file.txt', 'phonenumber_file.txt', 'emails.txt')

I want to get a result like this

name_file.txt
['charles', 'frank', 'chris']
phonenumber_file.txt
{'charles': '12345', 'frank': '23456', 'chris': '34567'}
emails.txt
{'charles': '[email protected]', 'frank': '[email protected]', 'chris': '[email protected]'}

as you can see i have 3 txt files. it's too verbose if I write them one by one. and I try to use for loop

for file in files:
    for ld_name in ld_names:
        print(ld_name)
    print(file

this is the code i try to write to the files.

    while True:
        mes = input('please press your key:')
        if mes == 'quit':
            for file in files:
                with open(file, 'ab') as f:
                    for ld_name in ld_names:
                    pickle.dump(ld_name, f) 
                    f.close()
            break

but the result is not I want to get

could you explain it more? i have no idea what are you trying to do! do you want them to write to a txt file? — G.Jan
– G.Jan, Commented Oct 22, 2016 at 5:55
yes, i am trying to write a contact program and i need to write data of list & dicts to a file. as you can see i have 3 files and it's verbose if i try to write them one by one — near99
– near99, Commented Oct 22, 2016 at 6:45

Grainier · Accepted Answer · 2016-10-22 07:21:38Z

1

To dump json, you should use json instead of pickle. And if you are certain that the indexes of ld_names and files matches, then you can use enumerate with the files. Otherwise, I suggest using a dict of files (i.e {file: data, ...}). Try this sample code;

import json

if __name__ == '__main__':
    names = ['charles', 'frank', 'chris']
    phonenumbers = {'charles': '12345', 'frank': '23456', 'chris': '34567'}
    emails = {'charles': '[email protected]', 'frank': '[email protected]', 'chris': '[email protected]'}

    ld_names = names, phonenumbers, emails
    files = ('name_file.txt', 'phonenumber_file.txt', 'emails.txt')

    for i, file in enumerate(files):
        with open(file, 'ab') as f:
            json.dump(ld_names[i], f)
            f.close()
            pass
        pass

edited Oct 22, 2016 at 7:21

answered Oct 22, 2016 at 7:15

Grainier

1,6542 gold badges17 silver badges30 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

near99 Over a year ago

ha, i am sorry for accept your answer late because i don't know and i don't have enough reputation to vote it up :( i am sorry about that..

Collectives™ on Stack Overflow

Python for-loop

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related