Answered: mystr is "numberlike" if: - mystr is…

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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Question

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 a simple python code in python 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

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