Revision: commands and strings

Revision: commands and strings

1. Strings

   • Writing as str in python.
   • A contiguous collection of characters surrounded by single or double speech marks.
   • Comes up as green speech marks in python.
   • To count a certain number of strings, we always start from zero.
   • h = "cheesecake" print(h[0])
     • This will print the first letter of the variable h which would be "c"
   • h = "cheesecake" print(h[0:5])
     • This allows us to print multiple letters of the varibale h
   • strip( ) command
     • If we have a string with spaces either side of the speech marks, we can remove these using the strip command.
     • This can be also used to take away certain characters in a string. (Note, this can only be done when there are no spaces between the string and the speech marks.)

2. Upper ( ) and lower ( ) command

   • print(h.upper()) print(h.lower())
     • Upper prints the variable h in capitals.
     • Lower prints the variable h in normal lettering.

3. len ( ) command

   • print(len(h))
   • prints the length of a variable.

4. Replace( ) command

   • (h.replace('c' , 'h'))
     • This would print hceesecake

5. split ( ) command

   • print(h.split(","))
     • This would print the variable h which I have now changed to "love cheesecake") This would print {" love "cheesecake"}

6. For loops

   • for x in banana: print(x)
     • This print banana like this: b a n a n a