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  1. from decimal import Decimal
  2.  
  3. def format(number):
  4.     n = Decimal(number)
  5.     return '{:.{}f}'.format(n, max(1, -n.normalize().as_tuple().exponent))
  6.  
  7. for number in "42", "42.0000", "42.34", "42.3400", "42.3456":
  8.     print(number, "=>", format(number))
Success #stdin #stdout 0.05s 10380KB
comments (?)
stdin 
Standard input is empty
stdout 
42 => 42.0
42.0000 => 42.0
42.34 => 42.34
42.3400 => 42.34
42.3456 => 42.3456
https://ideone.com/hbx3Q0
language:
Python 3 (python  3.12)
created:
1 year ago
visibility:
secret

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