Question

Objective

Learn about String methods
Work with the Python documentation

Specifics

Perform a simple Google search (or use any other search engine) on “Python String methods”. One of the first links will be to the Python webpage detailing the built-in data types. This page contains a description of the methods available in String variables. You may use other webpages for this assignment, but you need to be aware of the official documentation for the language.

The webpage lists methods that are part of every String variable. The methods can return information about the data in the String variable, such as an integer or a Boolean value, or even return a new String value. NONE of the method will alter the value in the variable.

Given a String variable x identify the method, or methods, which can be used to perform the following tasks. Quite often there are two, and possibly more, methods that could be used perform the tasks. Write the function or method, with the argument(s) (if needed) to perform the tasks. Don’t worry about using the results, just demonstrate how to use the function/method. For example, if the question was “Determine if x starts with a ‘q’”, the method call would be:
x.startswith(‘q’)

1. Determine how many characters are in x.

2. Determine the position of the first occurrence of the letter “q” in x.

3. Determine if the last character in x is the letter “q”.

4. Get a copy of x in all upper case letters.

5. Is x already comprised of all upper case letters.

6. Get a copy of x in all lower case letters.

7. Determine if x contains any characters at all.

8. Get a copy of x with the first blank space (" ")changed to a dash ("-").

9. Get a copy of x with all blank spaces (" ") changed to dashes ("-").

10. Break up x into one or more values by a delimiter. For example, if a string

    contained “a,b,c”, how could your program return the values “a” and “b” and “c”?

11. Determine if x “looks like” a number. Remember, the int() function crashes if

    the supplied string doesn’t “look like” a number.

12. Determine if x “looks like” a name, meaning it contains only the characters ‘a’

    through ‘z’, either upper or lower case.

Answer 1

Thanks for the question, here are all the functions you will be needing.

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x = 'some string'
# Determine how many characters are in x.
characters = len(x)
print(characters)

# Determine the position of the first occurrence of the letter “q” in x.
pos = x.find('q')
print(pos)

# Determine if the last character in x is the letter “q”.
last_character_q = x.rfind('q') == x[-1]

#Get a copy of x in all upper case letters.
upper_case_x = x.upper()

#Is x already comprised of all upper case letters.
is_x_in_upper = x.isupper()

#Get a copy of x in all lower case letters.
x_lower = x.lower()


#Determine if x contains any characters at all.
is_zero_length = len(x)==0

#Get a copy of x with the first blank space (" ")changed to a dash ("-").
x_updated = x.replace(' ','-',1)

#Get a copy of x with all blank spaces (" ") changed to dashes ("-").
x_updated =x.replace(' ','-')

# Break up x into one or more values by a delimiter. For example, if a string
x_splitted = x.split()


#Determine if x “looks like” a number.
is_x_number = x.isnumeric()

#Determine if x “looks like” a name,
is_x_name = x.isalpha()

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