Python Day 1

Yesterday I started my adventures in learning python, and these are my notes:
First looking at how to run python,

• Download and install python: http://www.python.org/download
• Then running commands in the interactive python shell
• Saving files with a .py extension then running them by using the command:
• #python name_of_program.py
• Saving files with a header, therefore running them from a command line.

Then looking at the print command:
*Using quotation marks e.g. "" and '', to print out literal/string statements
*Also adding commas to continue the print expression

Operations:
*Python has six basic operations for numbers:

Exponentiation
**
5 ** 3 == 125
Multiplication
*
2 * 3 == 6
Division
/
14 / 3 == 4
Remainder
%
14 % 3 == 2
Addition
+
1 + 2 == 3
Subtraction
-
4 - 3 == 1

Getting input from a user:

• raw_input returns a string while
• input returns a number.

Variable types:

• type which tells what a variable is, e.g. int, float, string.
• Numbers are of type int or float (which are short for 'integer' and 'floating point' respectively).
• strings

The operations with strings do slightly different things than operations with numbers.
Here is the list of some string operations:

Repetition
*
"i" *5 == "iiiii"

Concatenation
+
"Hello, " + "World!" == "Hello, World!"