Why doesn't Python write to the file? -


i have programmed small password generator can save password , service on file named "password.txt". everytime run program, file remains blank. when delete file , run program again, file "password.txt" created still blank.

import random  letters = "1 2 3 4 5 6 7 8 9 q w e r t z u o p s d f g h j k l y x c v b n m q w e r t z u o p s d f g h j k l y x c v b n m : ; , . 0".split()  def checknumb(string):     in string:         x = i.isdigit()         if x == true:             return true  def createpassword():     global letters     password = ""     = 0     passlength = random.randint(7, 10)     while < passlength:         passletter = random.choice(letters)         password += passletter         += 1     x = checknumb(password)     if x != true:         password = createpassword()     return password  print("what name of service?") service = input() password = createpassword() print(password, "will password for", service)  file = open("password.txt","a") file.write(service + ": " + password) file.close()

also, because beginner, great if point out few improvements can in code.

edit : indentation error on while statement mistake made while copying code here. program has no indentation errors. asongtoruin reminding me.

just small indentation error

import random  letters = "1 2 3 4 5 6 7 8 9 q w e r t z u o p s d f g h j k l y x c v b n m q w e r t z u o p s d f g h j k l y x c v b n m : ; , . 0".split()  def checknumb(string):     in string:         x = i.isdigit()         if x == true:             return true  def createpassword():     global letters     password = ""     = 0     passlenght = random.randint(7, 10)     while < passlenght:         passletter = random.choice(letters)         password += passletter         += 1     x = checknumb(password)     if x != true:         password = createpassword()     return password  print("what name of service?") service = input() password = createpassword() print(password, "will password for", service)  file = open("password.txt","a") file.write(service + ": " + password) file.close()

this works, @ while indentation in createpassword()

output

python write_file.py name of service? service1 scawelnu7f password service1

file content:

service1: uj.vosk38

also refer link, file appending difference

opening file append


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