replacing "with" statement in Python code

Question

import json
with open("login_data.txt", "r") as login_file:
    try:
        users = json.load(login_file)
    except:
        users = {}

Recently, I'm doing a presentation for my code. However, my lecturer requires me to break down the code into pseudocode.

I can't find any pseudocode terms that fit in the with statement. I need to find alternative solution that can replace the with statement above.

 #i suppose it should look like this:...
def dummyname(login_file):
    login_file = process open("login_data.txt","r")
    while
        users != {}
    do
        users = process json.load(login_file)
process dummyname(login_file)
#is it something like this?

Top tip: bare except: is very bad practice.

jonrsharpe
– jonrsharpe

2015-09-28 07:44:31 +00:00
Commented Sep 28, 2015 at 7:44 — jonrsharpe
– jonrsharpe, Commented Sep 28, 2015 at 7:44
@jonrsharpe except ValueError: should work right?

Hashashihn Altheim
– Hashashihn Altheim

2015-09-28 10:55:45 +00:00
Commented Sep 28, 2015 at 10:55 — Hashashihn Altheim
– Hashashihn Altheim, Commented Sep 28, 2015 at 10:55

Lærne · Accepted Answer · 2015-09-28 07:24:33Z

3

If you don't mind to write less safe pseudo-code ( and write safe after ) you could open-close.

login_file = open "login_data.txt" in text reading mode
users = load_json( login_file )
if load_json failed,
    users = {}
close( login_file )

answered Sep 28, 2015 at 7:24

Lærne

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Comments

Neil G · Accepted Answer · 2015-09-28 07:27:18Z

1

Instead of replacing with statements, describe what is going on in pseudocode. Context managers are fundamental programming elements.

answered Sep 28, 2015 at 7:27

Neil G

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1 Comment

Hashashihn Altheim Over a year ago

i'll try my best to understand it~ Coz sometime i know how to use a code but without knowing how it works.

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