How to open file and read

Answer 1

Here is a good explaination → http://www.pythonforbeginners.com/cheatsheet/JUMP_LINK__&&__python__&&__JUMP_LINK-file-handling

Answer 2

var = open("filename.extension", "r")

Answer 3

By using "with" statement is the safest way to handle a file operation in Python because "with" statement ensures that the file is closed when the block inside with is exited.

with open("my_file.txt", "r") as my_file:
# do some file operations

http://net-informations.com/python/file/open.htm