what does ord do in python code example

Example 1: ord python

# The ord() function returns an integer representing the Unicode character.
res = ord('A')
print(res)
# output 65

Example 2: ord() in python

'''note the integer representation of unicode character 
of capital letters and small letters are completely different'''

# example
print( ord('A') ) # output 65
print( ord('a') ) # output 97