100 Days of Code - The Complete Python Pro Bootcamp(Day3)

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Control Flow and Logical Operators

if-else

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if condition:
  do this
else:
  do this

Operator and Meaning

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> : greater than
< : less than
>= : greater than ro equal to
<= : less than or equal to
== : equal to
!= : not equal to

Get remainder

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7%2 # 1

# check even or not 
number = int(input("Which number do you want to check?"))

if number % 2 == 0 :
    print('This is an even number.')
else:
    print('Thisi is an odd number.')

Nested if statements and elif statements

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if condition:
  if another conditino:
    do this
  else: 
    do shit
elif condition2:
  do B
else:
  do this

Logical Operators

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A and B
C or D
not E

補充

  • The lower() function changes all the letters in a string to lower case.
  • The count() function will give you the number of times a letter occurs in a string.