Python Exercises: Extract the name from an Email address

Python String: Exercise-105 with Solution

From Wikipedia –
An email address consists of two parts, a local part[a] and a domain; if the domain is a domain name rather than an IP address then the SMTP client uses the domain name to look up the mail exchange IP address. The general format of an email address is local-part@domain, e.g. jsmith@[192.168.1.2], jsmith@example.com.

Write a Python program to extract and display the name from a given Email address.

Sample Data:
("john@example.com") -> ("john")
("john.smith@example.com") -> ("johnsmith")
("fully-qualified-domain@example.com") -> ("fullyqualifieddomain")

Sample Solution-1:

Python Code:

# Define a function to extract the name from an email address
def test(email_address):
    # Find the index of the '@' symbol in the email address
    r = email_address.index("@")
    
    # Use a generator expression to join alphabetic characters before the '@' symbol
    return "".join(l for l in email_address[:r] if l.isalpha())

# Initialize an email address
email_address = "john@example.com"
print("Original Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address))

# Repeat the process with a different email address
email_address = "john.smith@example.com"
print("\nOriginal Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address))

# Repeat the process with another different email address
email_address = "disposable.style.email.with+symbol@example.com@example.com"
print("\nOriginal Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address))

# Repeat the process with yet another different email address
email_address = "fully-qualified-domain@example.com"
print("\nOriginal Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address)) 

Sample Output:

Original Email: john@example.com
Extract the name from the said Email address:
john

Original Email: john.smith@example.com
Extract the name from the said Email address:
johnsmith

Original Email: disposable.style.email.with+symbol@example.com@example.com
Extract the name from the said Email address:
disposablestyleemailwithsymbol

Original Email: fully-qualified-domain@example.com
Extract the name from the said Email address:
fullyqualifieddomain

Flowchart:

Sample Solution-2:

Python Code:

# Define a function to extract the name from an email address
def test(email_address):
    # Split the email address using '@' and take the first part
    data = email_address.split("@")[0]
    
    # Initialize an empty string to store alphabetic characters
    result = ""
    
    # Iterate through each character in the data
    for i in data:
        # Check if the character is alphabetic
        if i.isalpha():
            # If true, add the character to the result string
            result += i
    
    # Return the result containing only alphabetic characters
    return result

# Initialize an email address
email_address = "john@example.com"
print("Original Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address))

# Repeat the process with a different email address
email_address = "john.smith@example.com"
print("\nOriginal Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address))

# Repeat the process with another different email address
email_address = "disposable.style.email.with+symbol@example.com@example.com"
print("\nOriginal Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address))

# Repeat the process with yet another different email address
email_address = "fully-qualified-domain@example.com"
print("\nOriginal Email:", email_address)

# Print a message indicating the extraction of the name from the email address
print("Extract the name from the said Email address:")

# Call the function to extract the name and print the result
print(test(email_address)) 

Sample Output:

Original Email: john@example.com
Extract the name from the said Email address:
john

Original Email: john.smith@example.com
Extract the name from the said Email address:
johnsmith

Original Email: disposable.style.email.with+symbol@example.com@example.com
Extract the name from the said Email address:
disposablestyleemailwithsymbol

Original Email: fully-qualified-domain@example.com
Extract the name from the said Email address:
fullyqualifieddomain

Flowchart:

Python Code Editor:

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