Python: Check a decimal with a precision of 2

Last update on March 31 2025 12:57:14 (UTC/GMT +8 hours)

48. Check Decimal Precision

Write a Python program to check a decimal with a precision of 2.

Sample Solution:

Python Code:

def is_decimal(num):
    import re
    dnumre = re.compile(r"""^[0-9]+(\.[0-9]{1,2})?$""")
    result = dnumre.search(num)
    return bool(result)

print(is_decimal('123.11'))
print(is_decimal('123.1'))
print(is_decimal('123'))
print(is_decimal('0.21'))

print(is_decimal('123.1214'))
print(is_decimal('3.124587'))
print(is_decimal('e666.86'))

Sample Output:

True                                                                                                          
True                                                                                                          
True                                                                                                          
True                                                                                                          
False                                                                                                         
False                                                                                                         
False

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to validate that a decimal number in a string has exactly two digits after the decimal point.
• Write a Python script to check if input numbers conform to a precision of 2 decimal places.
• Write a Python program to search a text for decimals and then filter those that have more than two digits after the decimal point.
• Write a Python program to use regex to verify that a decimal string is formatted with a precision of 2, and print True if it is.

Python Code Editor:

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