Code in Python mystr is "numberlike" if: - mystr is not the empty string - the first character in mystr is a digit - the count of '.' in mystr is zero or one (can't have more than one decimal point in a number) - every character in mystr is a digit ('0', '1', '2', ..., '9') or a decimal point ('.') Write the code to define the function is_numberlike(mystr), which takes a string parameter and returns a boolean result. If mystr is numberlike, the function returns True; otherwise, the function returns False. Hint: Check the first three requirements with decision statements, then use a for loop to iterate over mystr and check the every character is a digit or a dot For example: Test Result if not (is_numberlike("13.5") is True): print("error") if not (is_numberlike("-5532") is False): print("error") if not (is_numberlike("175") is True): print("error")
Code in Python mystr is "numberlike" if: - mystr is not the empty string - the first character in mystr is a digit - the count of '.' in mystr is zero or one (can't have more than one decimal point in a number) - every character in mystr is a digit ('0', '1', '2', ..., '9') or a decimal point ('.') Write the code to define the function is_numberlike(mystr), which takes a string parameter and returns a boolean result. If mystr is numberlike, the function returns True; otherwise, the function returns False. Hint: Check the first three requirements with decision statements, then use a for loop to iterate over mystr and check the every character is a digit or a dot For example: Test Result if not (is_numberlike("13.5") is True): print("error") if not (is_numberlike("-5532") is False): print("error") if not (is_numberlike("175") is True): print("error")
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Code in Python
mystr is "numberlike" if:
- mystr is not the empty string
- the first character in mystr is a digit
- the count of '.' in mystr is zero or one (can't have more than one decimal point in a number)
- every character in mystr is a digit ('0', '1', '2', ..., '9') or a decimal point ('.')
Write the code to define the function is_numberlike(mystr), which takes a string parameter and returns a boolean result.
If mystr is numberlike, the function returns True; otherwise, the function returns False.
Hint: Check the first three requirements with decision statements, then use a for loop to iterate over mystr and check the every character is a digit or a dot
For example:
Test | Result |
---|---|
if not (is_numberlike("13.5") is True): print("error") | |
if not (is_numberlike("-5532") is False): print("error") | |
if not (is_numberlike("175") is True): print("error") |
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