remove last character from dict value python

Question

I have got a dict:

base = [
    {'num': 10, 'bet': '100EUR'},
    {'num': 22, 'bet': '10EUR'},
    {'num': 10, 'bet': '210EUR'},
    {'num': 11, 'bet': '100EUR'},
    {'num': 8, 'bet': '50EUR'},
    {'num': 10, 'bet': '10EUR'},
    {'num': 8, 'bet': '30EUR'},
    {'num': 32, 'bet': '10EUR'}]

I am trying to remove last 3 symbols from all 'bet' values and make the result from str to int- so my base to become like this:

base = [
        {'num': 10, 'bet': 100},
        {'num': 22, 'bet': 10},
        {'num': 10, 'bet': 210},
        {'num': 11, 'bet': 100},
        {'num': 8, 'bet': 50},
        {'num': 10, 'bet': 10},
        {'num': 8, 'bet': 30},
        {'num': 32, 'bet': 10}]

How to do this? Thanks!

No - i have to delete last 3 symbols, so I will me able to tirn it in int — Nikita Chernevsky, Nov 15 '21 at 18:28

score 1 · Answer 1 · answered Nov 15 '21 at 18:29

Really you have a list of dictionaries; you can directly change the values in them by iterating and then by-name

for subdict in base:
    subdict["bet"] = int(subdict["bet"].replace("EUR", ""))

this is fragile on purpose to discover bad values in your list (raising ValueError for non-int keys if .replace() fails or you have some other structure); you can (for example) also extend this to other currencies by detecting a substring like "USD" subdict["bet"] before doing a conversion (though you would also want to convert the currency)

score 0 · Answer 2 · answered Nov 15 '21 at 18:27

0

Use a list comprehension and slice the bet key and convert to int

base = [{'num': b['num'], 'bet': int(b['bet'][:-3])}
        for b in base]
print(base)

answered Nov 15 '21 at 18:27

azro

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Starting from python 3.9 it's possible to use [`str.removesuffix()`](https://docs.python.org/3/library/stdtypes.html#str.removesuffix) which is a bit more safe. – Olvin Roght Nov 16 '21 at 11:30

score 0 · Answer 3 · answered Nov 15 '21 at 18:30

Update the values in place by slicing the values and converting to int:

for d in base:
    d['bet'] = int(d['bet'][:-3])

Output:

[{'num': 10, 'bet': 100},
 {'num': 22, 'bet': 10},
 {'num': 10, 'bet': 210},
 {'num': 11, 'bet': 100},
 {'num': 8, 'bet': 50},
 {'num': 10, 'bet': 10},
 {'num': 8, 'bet': 30},
 {'num': 32, 'bet': 10}]

remove last character from dict value python

3 Answers3