notes-if.txt

.--------------------------.
| November 12, 2016        |
|  Conditional statements  |
|  If / Else               |
'--------------------------' 

# Comparison Operators:
 == 
 != 
 >
 <
 >=
 <=

# Format! Statements that are indented are operated on 
#  as a result of the expression's validity.
if expression:
  statement
  statement
  statement
  if expression:    # nesting!
    statement
elif expression:    # optional
  statement
  statement
  statement
else expression:    # optional
  statement
  statement
  statement
outside conditional

# Concatenation. Consider the following nested loop. Nesting is great, but 
#  if it gets out of hand it can make managing code difficult.
if a == 10: 
  if b == 20:
    if c == 30:
      print("c is 30")

if (a == 10) and (b == 20) and (c == 30):    # accomplishes the same thing but
  print("c is 30")                           #  is easier to read or manage.