String Manipulation and Validation

What is concatenation?

• Counting the characters in a string
• Reversing a string
• Separating two or more strings
• Combining two or more strings together

What does .upper() do?

• Converts all characters in a string to uppercase
• Removes all whitespace from a string
• Reverses the order of characters in a string
• Converts all characters in a string to lowercase

What does .lower() do?

• Reverses the order of characters in a string
• Capitalizes the first letter of each word in a string
• Converts all the characters in a string to lowercase
• Counts the number of characters in a string

Which of these lines of code in Python would output the concatenated string:

John Smith

• print('John' . 'Smith')
• print('John' + 'Smith')
• print('John' + ' ' + 'Smith')

What is Validation?

• Checking if something meets certain criteria or standards
• Asking someone else to validate it
• Guessing if something is correct
• Ignoring all criteria and standards

What does .isalpha() do?

• It checks if all the characters in a string are numeric.
• It checks if all the characters in a string are alphabetic.
• It counts the number of vowels in a string.
• It converts all characters in a string to uppercase.

What does .isdigit() do?

• Counts the number of digits in a string
• Converts all characters in a string to digits
• Checks if the string contains at least one digit
• Checks if all the characters in a string are digits

What does .isalnum() do?

• Checks if all the characters in a string are alphanumeric
• Checks if all the characters in a string are numeric
• Converts all characters in a string to uppercase
• Counts the number of vowels in a string

What does .len() do?

• Converts all characters in a string to uppercase

• Counts the number of characters in a string

• Reverses the order of characters in a string

• Converts all characters in a string to lowercase

What does .isupper() do?

• Converts all characters in a string to uppercase
• Counts the number of uppercase characters in a string
• Checks if all the characters in a string are lowercase
• Checks if all the characters in a string are uppercase