Python pt.2

conditional statement and iteration statement

Python conditional statement

• Literally, the conditional statement can be used in the conditions of data analysis on Python.

• The reserved word of conditional statement is if/elif/else.

• if: The first condition is true.

• elif: if not true in the first condition, but other conditions are true.

• else: when every above conditions are false

• Format with example:

  if a > 15:
  	print('High')
  elif a = 15:
  	print('Yes!')
  else:
  	print('Low')

• Conditional statement is useful in various codes. (You’ll use it a lot!!)

Python iteration statement

1. while:

• repeat infinitely not until the reserved word break is used (in other words, repeat until conditions are met)
• format:

  while [conditions (able to be without conditions)]:
  	statement..
  	    ~	   

• if you stop the while statement because the conditions are alreay met, you have to use the reserved word break.
• if you execute the statement and move on the next statement by passing only some specific condition, you can use the reserved word continue.

1. for:

• repeat during the defined number of times
• use the range function with for loop (the automatically defined number of times)
• format:

  for i in [list, tuple ...] (or range(#, #+1):
  	statement..
  	    ~