Check Validate E-Mail Address in Python .py

# Prompt the user to enter an email address
email = input("Enter your email: ")  # Example: g@g.in

# Initialize flags for various checks
k, j, d = 0, 0, 0  # k: space check, j: uppercase letter check, d: invalid character check

# Check if the email length is at least 6 characters
if len(email) >= 6:
    # Check if the first character is a letter
    if email[0].isalpha():
        # Check if the email contains exactly one "@" symbol
        if "@" in email and email.count("@") == 1:
            # Check if the email ends with a valid domain (.xyz or .abc)
            if email[-4] == "." or email[-3] == ".":
                # Loop through each character in the email
                for i in email:
                    # Check if the character is a space
                    if i.isspace():
                        k = 1
                    # Check if the character is a letter
                    elif i.isalpha():
                        # Check if the letter is uppercase
                        if i.isupper():
                            j = 1
                    # Check if the character is a digit (valid in an email)
                    elif i.isdigit():
                        continue
                    # Check if the character is one of the allowed special characters
                    elif i in ["_", ".", "@"]:
                        continue
                    # If the character is not valid, set the invalid character flag
                    else:
                        d = 1

                # If any of the invalid conditions are met, print an error
                if k == 1 or j == 1 or d == 1:
                    print("Wrong Email 5")  # Space, uppercase, or invalid character detected
                else:
                    print("Email is valid")  # All checks passed
            else:
                print("Wrong Email 4")  # Domain format is invalid
        else:
            print("Wrong Email 3")  # Missing or multiple '@' symbols
    else:
        print("Wrong Email 2")  # First character is not a letter
else:
    print("Wrong Email 1")  # Email length is too short