Variables

Strings

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Another type of variable: Strings

A string in python is a variable that contains text. This can take many forms, and a string can contain numbers in the form of text. Here are a couple of examples of strings.

            
# Declare a string: # Strings can be multiple letters string1 = 'Hello World' # Strings can hold a text representation of a number string2 = "1" # Strings can hold a text representation of multiple numbers string3 = '1 2 3' # Print each out print(string1) print(string2) print(string3)

Official Definition:

String literals in python are surrounded by either single quotation marks, or double quotation marks.

'hello' is the same as "hello".

Strings can be output to screen using the print function

As well, there are a couple of methods that exist that can be used with strings. I will introduce a few.

  • You can find the length of a string using len()
  • Turn a string into all lower case string.lower()
  • The same works with .upper() method
  • Split a string using the .split() method
            
# Declare the string string1 = 'Hello World' # This will pint the length of the string print('The length of the string is: ', len(string1)) #This will print the string `hello world` print('The string in all lower case letters is: ', string1.lower()) #This will print the string `HELLO WORLD` print('The string in all UPPER case letters is: ', string1.upper()) #This will print the two strings 'Hello', 'World' print('The string split into a bunch of words is: ',string1.split(' '))