How to read a text file and store as different variables in python

Question

Inside the text file I currently have:

    tickets = []
    ticketPrice = 2.20
    ticketsNo =  150
    income = ticketPrice*ticketsNo
    ticketHi = 54
    limit = 1
    winners = []
    numbers = []
    winningTickets = []

How would I now read the file and have it create variables and store values accordingly? I know about

    with open("file.txt", "r") as f:
        //do stuff

but I don't know how to implement it in the fashion I'm after. Thanks in advance

Hullo there. You could probably go about using a dictionary. You could start off with `f.read().splitlines()` to divide the file into a list of lines. Then split each individual line at the equal sign with `split(' = ')`. You can then store the left-hand-side as the dictionary's key and the right-hand-side as the value. You can parse the constants using `eval()`. With `income = ticketPrice*ticketsNo`, I'm not so sure... — TrebledJ, Nov 02 '18 at 17:03
why don't you just import your file? It's valid Python source code... — juanpa.arrivillaga, Nov 02 '18 at 20:57
@juanpa.arrivillaga How would I do this? I've never heard of importing files before. — Bob, Nov 02 '18 at 21:48
@juanpa.arrivillaga That gives the following error: ```Traceback (most recent call last): File "main.py", line 3, in import vars.py ModuleNotFoundError: No module named 'vars.py'``` — Bob, Nov 02 '18 at 21:51
@juanpa.arrivillaga gives same issue? The files are in same directory — Bob, Nov 02 '18 at 21:53
You are going to need to provide more details in the question itself. — juanpa.arrivillaga, Nov 02 '18 at 21:53
@juanpa.arrivillaga nvm, it was just because I was on an online editor. After transferring files to my Desktop it works. How would I know use those variables? I've tried both ticketPrice and vars.ticketPrice — Bob, Nov 02 '18 at 22:02
`AttributeError: module 'vars' has no attribute 'ticketPrice'`. `tickets = [] ticketPrice = 2.20 ticketsNo = 150 income = ticketPrice*ticketsNo ticketHi = 54 limit = 1 winners = [] numbers = [] winningTickets = []` is my current code (each variable is on a different line, having issues with formatting) — Bob, Nov 02 '18 at 22:06

Franndy Abreu · Answer 1 · 2018-11-02T20:47:50.823

0

Using assignment unpacking:

with open("file.txt", "r") as f:
    data = f.readlines()


tickets, ticketPrice, ticketsNo, income, ticketHi, limit, winners, 
numbers, winningTickets = [d.split('=')[1].split('\n')[0] for d in data]

The result of this unpacking will be of type string. For int values, you will have to parse the variable eg. int(limit).

edited Nov 02 '18 at 20:47

answered Nov 02 '18 at 17:23

Franndy Abreu

186
2
11

I'm not sure if I've formatted this correctly, however I'm getting an error on line 51: `number = r.randint(1, limit)` saying I should be providing a string not an integer? Please see [my code](https://repl.it/repls/CooperativeGratefulSandboxes) for more details (code goes onto more than one document) – Bob Nov 02 '18 at 18:50
I've tried that code same issue. What I don't get though is why it's saying it should be a string, because on the [docs](https://docs.python.org/2/library/random.html#random.randint) it says to put an integer. – Bob Nov 02 '18 at 21:47
The variable `limit` that you are trying to put in the `randint()` function is a string, it should be an integer. You have to convert the variable from string to an integer. – Franndy Abreu Nov 02 '18 at 21:52
That's what I thought, but the error definitely says that it expected a string and got an integer... The error I get is `TypeError: must be str, not int` – Bob Nov 02 '18 at 22:03

How to read a text file and store as different variables in python

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