Python: Find the common values that appear in two given strings

# Define a function to find the intersection of two strings
def intersection_of_two_string(str1, str2):
    # Initialize an empty string to store the intersection
    result = ""

    # Iterate through each character in the first string
    for ch in str1:
        # Check if the character is present in the second string and not already in the result string
        if ch in str2 and not ch in result:
            # If true, add the character to the result string
            result += ch

    # Return the resulting intersection string
    return result

# Initialize two strings
str1 = 'Python3'
str2 = 'Python2.7'

# Print the original strings
print("Original strings:")
print(str1)
print(str2)

# Print a newline for better formatting
print("\nIntersection of two said String:")

# Call the function to find the intersection of the two strings and print the result
print(intersection_of_two_string(str1, str2))