Basic String Manipulation

Question 1

String Manipulation

Answer 1

• The process of being able to adopt or edit a string.
• We might do this in a program so that:
• we can ensure what the user has to enter is both easy for the user to understand and is also:
• then in the format we require it to be in.

Question 2

String Concentation definition

Answer 2

• Simply refers to the process of bringing together (concatenating) two or more strings.

Question 3

String Concatenation Example:
- In Python this is done using a +.
- In the example below we are requesting the
user input their date of birth.
- First they input their date, then month, then year.
- We are storing each of these as strings

Answer 3

• day = str(input(“Enter the day of your DOB - “))
• month = str(input(“Enter the month of your DOB - “))
• year = str(input(“Enter the year of your DOB - “))
• DOB = day + month + year
• print(DOB)

Question 4

Splitting Strings at specific characters -
- Most often, when people enter their date of birth, they enter it by separating the different parts with a forward slash (/).
- In the example below, we are requesting the user enter their date of birth, separating each part with a /.
- We are then splitting this string up at each point where the user enters a /, and in this case storing each new string in a new variable:

Answer 4

• DOB = input(“Please enter your DOB in the format DD/MM/YYYY - “)
• day, month, year = DOB.split(“/“)
• print(day)
• print(month)
• print(year)
• Here we are requesting the user enter their DOB in the specified format.
• You will notice we haven’t put str before the input.
• If we don’t specify what data type we want to use when getting input, Python will automatically store it as a string.

Question 5

Splitting At Specific Characters when you don’t know how many variables you need:

• We can store the new split strings inside a list.
• This means we have an open amount to store, and it doesn’t matter how much the user inputs.
• In the example below we are asking the user to enter their favourite words, separated by a space.
• In this case we don’t know how many words they might input:

Answer 5

• words = input(“Please enter your favourite words separated by a space - “)
• list_of_words = words.split(“ “)
  print(list_of_words)

Question 6

Splitting At Every Character:

• To do this, rather than using .split, we use the list function.
• This will create a list from the split
  string.
• Let’s take the example of creating a password.
• In the example below we are asking
  the user to enter a word that is memorable to them.
• We are then going to split it at each
  individual character, and store each character in its own place in a list:

Answer 6

• word = input(“Enter a memorable word - “)
• list_of_letters = list(word)
• print(list_of_letters)