if, else, and elif Statements

A branch's statements can include any valid statements, including another if-else statement, which are known as nested if-else statements.

if grade >= 90:
  if grade < 93:
    print("that's an A-")
  elif grade >= 97:
    print("that's an A+")
  else:
    print("that's an A")
  else:
    print("not an A grade")

if grade = 78

if grade >= 90:
  if grade < 93:
    print("that's an A-")
  elif grade >= 97:
    print("that's an A+")
  else:
    print("that's an A")
  else:
    print("not an A grade") # not an A grade

if grade = 95

if grade >= 90:
  if grade < 93:
    print("that's an A-")
  elif grade >= 97:
    print("that's an A+")
  else:
    print("that's an A") # that's an A
  else:
    print("not an A grade")