how to check if a letter is capital in python code example

Example 1: python method to check for uppercase character

a="DEMO"
print(a.isupper())

Example 2: python how to detect if uppercase is used in input

isupper()
islower()

Example 3: function in oythin test if letter is capital

string.isupper() # returns True or False, only returns true if all characters in string are Capiral