In Python3 ascii_uppercase — it is a pre-initialized string used as a string constant. In Python, the string ascii_uppercase will capitalize & # 39; ABCDEFGHIJKLMNOPQRSTUVWXYZ & # 39 ;.

Syntax: string.ascii_uppercase

Parameters: Doesn`t take any parameter, since it`s not a function.

Returns: Return all uppercase letters.

Note. Make sure to import the string library function to use ascii_lowercase.

Code # 1:

# import string library function import string    # Store the value as a result of a variable result = string.ascii_uppercase < / code>   # Print value print (result)

Output:

 ABCDEFGHIJKLMNOPQRSTUVWXYZ 

Code # 2: This code checks if the line input contains only upper ASCII characters.

# import string library function import string    # The function checks if the input line is # has upper ASCII letters or not def check (value):  for letter in value:    # If anything then, besides the upper ASCII # the letter is present, then we return # False, otherwise return True   if letter not in string.ascii_uppercase:    return False return True   Driver code input1 = "GeeksForGeeks" print (input1, "- & gt; " , check (input1))     input2 = "GEEKS FOR GEEKS" print (input2, "- & gt;" , check (input2))    input3 = "GEEKSFORGEEKS" print (input3, "- & gt;" , check (input3))

Exit:

 GeeksForGeeks - & gt; False GEEKS FOR GEEKS - & gt; False GEEKSFORGEEKS - & gt; True 

Applications:
String constant ascii_uppercase can be used in many practical applications zheniyah. Let`s see some code explaining how to use ascii_uppercase to generate strong random passwords of a given size.

# Import random to generate # random sequence of lines import random    # Import string library function import string    def rand_pass (size):     # Takes a random selection from # ascii_letters and digits generate_pass = `` .join ([random.choice (  string.ascii_uppercase + string.digits)  for n in range (size)])     return generate_pass    Driver code password = rand_pass ( 10 )  print (password)

Exit :

 TR2ESZAJOT