Question

PYHTON

A company uses codes to represent its products, for example ABC2475A5R-14. Valid codes must have:

• At least 10 characters (some codes have more than 10 characters)

• Positions 4 through 7 must be digits (and represents the country in which the product will be sold)

• The character in the 10th position must be a capital letter and represents the security level of the product.

Write a Python program that will read 10 product codes from a text file (Codes.txt - attached below). Determine if each conforms to the rules listed above:

If it does conform, print a heading: Valid Code(s) are: and list the codes that are valid. If it does not conform, print a heading: Invalid Code(s) are: and list the codes that area invalid. Be sure to test all possible combinations.

Further, if the code is valid, due to new government security laws, products with a security level of R (restricted) are no longer to be sold in countries with a country code of 2000 or higher. Output a heading: Invalid Restricted Code(s) are: and list the codes that are invalid in case you encounter any products that violate these new laws.

.txt file

XYZ2755R-14
RST1234A6A-12
UVW24a6R7R-13
PQR3999F85-11
STI1281J9A-04
FOR2561T4R-54
BID2075U3R-55
AGA1475P1B01
JBT2175E5X-04
KAM1145X2R-05

PYTHON

Answer 1

Code.py

#importing regex library as I have used regex in my code for matching

import re

#three list for storing different types of codes

valid=[]

invalid=[]

restricted=[]

#opening a txt file in read mode

f = open("Codes.txt", "r")

for x in f:

str=x;

s1 = str[3:7] #Cutoff the country code part of string from the given code and take in s1 string for further matching

if (len(str)<10): # first matching that code is of more than or equal to of length 10 or not

invalid.append(str) # if not add it to invalid list

elif (not(re.search("^[0-9]+$", s1))): #if length is ok then check all country codes are numeric or not

invalid.append(str) # if not add it to invalid

elif (not(re.search("^[A-Z]+$", str[9]))): #similary checking 10th character is capital or not

invalid.append(str) # if not add it to invalid

else:

valid.append(str) # else it is a valid code

# if valid then check Security code is R or not if yes add it to restricted list by checking its country code

if (str[9]=="R" and int(s1)>2000):

restricted.append(str)

f.close() # close the file

#print the result

print("\nValid Code(s) are:\n")

for a in valid:

print(a)

print("\nInvalid Code(s) are:\n")

for a in invalid:

print(a)

print("\nInvalid Restricted Code(s) are:\n")

for a in restricted:

print(a)

Codes.txt

XYZ2755R-14
RST1234A6A-12
UVW24a6R7R-13
PQR3999F85-11
STI1281J9A-04
FOR2561T4R-54
BID2075U3R-55
AGA1475P1B01
JBT2175E5X-04
KAM1145X2R-05

Snaps of Code and Output: