Python's use of multi-branching if statements

score = int (input("score："))
if score > 90:
  print("A")
elif score > 80:
  print("B")
elif score > 70:
  print("C")
elif score > 60:
  print("D")
else score < 60:
  print("Go for it, kid.")

'''
Conditional Testing
'''
# Individual condition tests
age0 = 22
print(age0>=22) # True

#Multiple condition tests and
age0 = 22
age1 = 18
print(age0>=21 and age1>=21) #False

#Multiple condition tests or
print(age0>=21 or arg0>=21) #True
 
#in and not in (checking whether a particular value is in the list)
fruits = ['apple','banana','orange']
print('apple' in fruits) #True
print('apple' not in fruits) #False

'''
Simple if statements (containing only a test and an action)
'''
height = 1.7
if height>=1.3:
  print('High')

'''
if-else
'''
height = 1.8
if height<=1.4:
  print('Free tickets')
else:
  print('Unanimous vote')
#Final Output Unanimous Vote

'''
if-elif
'''
height = 1.5
if height>=1.4:
  print('Heh heh.')
elif height>=1.3:
  print('Huh.')
#Final output hehehe

'''
if-elif-else
'''
height = 1.8
if height<=1.4:
  print('Free tickets')
elif height>1.4 and height<=1.7:
  print('Half Ticket')
else:
  print('Unanimous vote')
#Final Output Unanimous Vote