Question

IN PYTHON. We have seen examples of using the python re library. In this practice, you need to write python code and complete following tasks. (You can decide whether you want to define functions and how to organize your code. It is for your own practice.)

1). Define 10 string variables that follows the requirement given an integer, a float, a double, a float end with letter f (4.321f), Capital Letters( followed by small case letters, followed by digits, Exactly 3 digits, followed by 2 letters

2). Write down the regular expressions for these patterns

3). For each string: use if-elif-else and re library to test which pattern matches this string.

4). Print out formatted output messages for the pattern matching results. For example: Str1=”22.11” Test this string against different regular expression patterns until finding a match When a match is found, print out a message “22.11 matches the pattern: A double.”

Answer 1

Code

import re

#to check integer
def isInteger(s):
    try:
        return isinstance(int(s), int)
    except:
        return False

#to get float
def isFloat(s):
    return False if (re.match('^\d+?\.\d+?f{1}$', s) is None) else True

#to get double string
def isdouble(s):
    try:
        return isinstance(float(s), float)
    except:
        return False

#To get capital string
def isCapital(s):
    return False if re.match('^[A-Z]+[a-z]+(\d{3})+([a-zA-Z]{2})$', s) is None else True

#to check str type and print
def checkTypeOfStr(s):
    if(isInteger(s)):
        print(s + " matches the pattern: A Integer")
        return
    elif(isdouble(s)):
        print(s + " matches the pattern: A Double")
        return
    elif(isFloat(s)):
        print(s + " matches the pattern: A Float")
        return
    elif(isCapital(s)):
        print(s + " matches the pattern: A Capital Letters")
        return
    else:
        print(s + " matches the pattern: A String")
        return

def main():
    #samples
    str1 = "10"
    str2 = "10.12"
    str3 = "10.1234f"
    str4 = "3123123"
    str5 = "0.34534f"
    str6 = "ADEeresad445eF"
    str7 = "2352345234523452345234"
    str8 = "2352345.234523452345234"
    str9 = "2352345.45234f"
    str10 = "DEMOAttached445eF"
    checkTypeOfStr(str1)
    checkTypeOfStr(str2)
    checkTypeOfStr(str3)
    checkTypeOfStr(str4)
    checkTypeOfStr(str5)
    checkTypeOfStr(str6)
    checkTypeOfStr(str7)
    checkTypeOfStr(str8)
    checkTypeOfStr(str9)
    checkTypeOfStr(str10)
main()

(sdev) (base) L-156168432:ai_drive PR951365$ python gatcha_camera.py 10 matches the pattern: A Integer 10.12 matches the pattern: A Double 10.1234f matches the pattern: A Float 3123123 matches the pattern: A Integer 0.34534f matches the pattern: A Float ADEeresad445eF matches the pattern: A Capital Letters 2352345234523452345234 matches the pattern: A Integer 2352345.234523452345234 matches the pattern: A Double 2352345.45234f matches the pattern: A Float DEMOAttached445eF matches the pattern: A Capital Letters