Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Transcribed Image Text:This assignment involves the use of a dictionary, functions, and
Hexadecimal Binary
'O'
Hexadecimal Binary
"0000'
'8'
'1000'
exception handling.
'1'
"0001'
'9'
'1001'
Write a program that converts a number input in hexadecimal
'2'
'0010'
'A'
'1010'
into binary. The program should use a Python dictionary to
hold the conversion pairs from hexadecimal to binary. For your
reference, here is a table showing the conversions from
hexadecimal to binary .
'3'
'0011'
'B'
'1011'
'4"
'0100'
'C'
'1100'
'5'
'0101'
'D'
'1101'
'6'
'0110'
'E'
'1110'
'7'
'0111'
'F'
'1111'
You should have two functions .. main() and convert(). The main() function should simply ask the user to enter a
hexadecimal number, then pass the hex number to the convert() function. The convert() function should accept the hex
number, then use the dictionary to determine the binary equivalent. The complete binary number should be returned
to main(). The main() function should then print the binary number. Note that the hex number may have only one digit
or it may have multiple digits. See the examples below.
RESTART: C:\Users\dbatts00
Enter a hexadecimal number: B
The binary equivalent is 1011
RESTART: C:\Users\dbattso0
Enter a hexadecimal number: 2A
The binary equivalent is 00101010
>>>
RESTART: C:\Users\dbatts0d
Enter a hexadecimal number: B6F
The binary equivalent is 101101101111
Make sure to check for a KeyError. (Remember that hexadecimal numbers must be 0 through F. Lowercase letters
should not be recognized as a valid hexadecimal number. See below .
Enter a hexadecimal number: b6f
The binary equivalent is not found. Invalid hexadecimal number.
Make sure to include header and step comments in your program.
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