CODEWITHSUNDEEP
python-3.x
Sunner
Sunner

Reputation: 33

Incorrect output when using floating

import math

#get base
inputOK = False
while not inputOK:
    base = input('Enter base:')
    if type(base) == type(1.0): inputOK = True
    else: print('Enter, Base must be a floating point number.')

Enter base:1.0 Enter, Base must be a floating point number.

I can't get a correct answer when I input 1.0. It always output Base must be a floating point number. I want to get True and exit the loop. What's wrong with my program.

Upvotes: 0

Views: 36

Answers (1)

Azat Ibrakov
Azat Ibrakov

Reputation: 10971

  • input returns str object so we need to convert to float manually,
  • we use isinstance for type checking (if it needed).

Following EAFP we can write

# get base
inputOK = False
while not inputOK:
    try:
        # user can pass 'inf', 'nan', no error will be raised
        # should we check this cases?
        base = float(input('Enter base:'))
    except ValueError:
        print('Base must be an integer or floating point number.')
    else:
        inputOK = True

Upvotes: 1

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