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t-walker / Python_Lesson_1_Variables.py
Last active May 28, 2016 00:45
This explains some of the very basic concepts needed to understand Python.
# This is the first line of a python file. This line is a comment and Python ignores it because it starts with a '#'
# Whenever you see a '#' you should know that I'm 'talking' instead of actually writing a Python statement.
# You can also use a comment after a Python statement. For example:
print("Hello World") # This line prints hello world.
# Python will print out Hello World and then continue to move on after seeing the comment.
# Another important thing to know is how Python's syntax is formatted.
# If you're going to create a variable or function, the names cannot be separated by any spaces.
#this function that opens a file in the same directory
def function(filename):
file = open(filename, "r")
for line in file.readlines():
print(line)
#returns the square root of a number
sqrt = number ** (0.5)
#returns the log of a number