activity 1

• strings
  • a data type that can include letters, numbers, and symbols
• there are some characters that cause problems
  • 'there's a snake in my boot!'
    • python thinks that the apostrophe in there's ends the string
  • fix: 'there\'s a snake in my boot!'
    • (be sure to use forward slash, not back slash
• each character in a string is assigned a number, which is called the index
  • c = "cats" [3]
    • in python, you start counting from 0; so, 0 = c, 1 = a, 2 = t, 3 = s

strings methods

• string methods let you perform specific tasks for strings
  • four string methods
    • len ()
    • lower ()
    • upper ()
    • str ()
• line 1 parrot = "Norwegian Blue"
• line 2 print len(parrot)
  • the output will be the length of "Norwegian Blue"
• lower() gets rid of all the capitalization in your strings
  • print parrot.lower()
• upper() can make a string upper case
  • "the Ministry of Silly Walks".upper()
    • whatever I wants capitalized needs to go in parenthesis
• str()turns non strings into strings

dot notation

• methods that use dot notation only work with strings
• however, len() and str() can work with other data types

printing strings

• editor: where we write the code
• console: where results of the code are shown
• print: displays code in console
  • print "Monty Python"
  • print Monty Python
  • why do I need to add quotation marks sometimes and not others?
• concatenation: combining strings
  • print "Life " + "of " + "Brian"
    • no space after quotation mark on last word
• explicit string conversion
  • sometimes you need to combine a string with something that isn't a string
  • to do that, convert the nonstring into a string str()
• % after a string combines strings with variables
  • print "Hello %s" % (name)
    • %s will be replaced by (name)