python-syntax-sheet.txt

# 06th march 2018 invent sekar
# python syntax learnings



#-------------------------------------
# comment - single line, multiline
#-------------------------------------
# a hash creates a single line comment
# there is no multiline comment on python. just use # on every line.


#-------------------------------------
# print
#-------------------------------------


#the correct way to print a string- 

>>> print("Hello")
Hello

#is  Note; however, that is Python 2.X, you could also write:

>>> print "Hello"
Hello


# ----- print blank line(s)--------
# credits - http://thomas-cokelaer.info/tutorials/python/print.html

Let us print 5 blank lines. You can naively type:

print(5 * "\n")

or:
print("\n\n\n\n\n")

or even better:
print(5 * "\n")


# ----- Print an object without a trailing newline--------
# ----- credits - http://thomas-cokelaer.info/tutorials/python/print.html

By default, the print function add a trailing line. To prevent this behavious, add a comma after the statement:

>>> x, y = 1, 2
>>> print(x),; print(y)
1 2
you could use:

print x,y,


#-------------------------------------
#user input
#-------------------------------------

# In Python 2, raw_input() returns a string, and input() tries to run the input as a Python expression.

# for Python 3.x
# The difference is that raw_input() does not exist in Python 3.x, while input() does. 
# Actually, the old raw_input() has been renamed to input(), and the old input() is gone, 
# but can easily be simulated by using eval(input()). 
# (Remember that eval() is evil, so if try to use safer ways of parsing your input if possible.)
# from stock overflow user Sven Marnach




#-------------------------------------
#basic loops - for, while, if, else, 
#-------------------------------------












#--------------------------------------------------
# Data Structures (list, dict, tuples, sets, strings)
#--------------------------------------------------