Earn Higher Grades With Instant Assignment Help.Ask Question!

Python Programming
(5/5)

valid numerical string is one with only digits and commas, and commas only appear at every three digits. In addition a valid string only starts with a 0 if it has exactly one character.

INSTRUCTIONS TO CANDIDATES
ANSWER ALL QUESTIONS

def valid_format(s):

    """

    Returns True if s is a valid numerical string; it returns False otherwise.

   

    A valid numerical string is one with only digits and commas, and commas only

    appear at every three digits.  In addition, a valid string only starts with

    a 0 if it has exactly one character.

   

    Pay close attention to the precondition, as it will help you (e.g. only numbers

    < 1,000,000 are possible with that string length).

   

    Examples:

        valid_format('12') returns True

        valid_format('apple') returns False

        valid_format('1,000') returns True

        valid_format('1000') returns False

        valid_format('10,00') returns False

        valid_format('0') returns True

        valid_format('012') returns False

   

    Parameter s: the string to check

    Precondition: s is nonempty string with no more than 7 characters

    """

    text=len(s)

    text1= introcs.count_str(s,',')

    if s=='0':

        return True

    if text <=3 and introcs.isnumeric(s):

        return True

    else:

        return False

    pass

Attachments:
(5/5)

Related Questions

CSI 1420 Introduction to C Programming & Unix Fall 2018, CRN 44882, Oakland University Homework Assignment 6 - Using Arrays and Functions in C

DescriptionIn this final assignment, the students will demonstrate their ability to apply two majorconstructs of the C programming language – Fu

The standard path finding involves finding the (shortest) path from an origin to a destination, typically on a map. This is an

Path finding involves finding a path from A to B. Typically we want the path to have certain properties,such as being the shortest or to avoid going t

Develop a program to emulate a purchase transaction at a retail store. This program will have two classes, a LineItem class and a Transaction class. The LineItem class will represent an individual

Develop a program to emulate a purchase transaction at a retail store. Thisprogram will have two classes, a LineItem class and a Transaction class. Th

SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:

1 Project 1 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of

Project 2 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:

1 Project 2 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of

Ask This Assignment To Be Done By Our ExpertsGet A+ Grade Solution Guaranteed

expert
joyComputer science
(4/5)
12 Answers Hire Me
expert
Robert DLaw
(4.8/5)
899 Answers Hire Me
expert
Dr Samuel BarberaStatistics
(5/5)
600 Answers Hire Me
expert
Tutor For YouEconomics
(5/5)
502 Answers Hire Me