メモ「Automate the Boring stuff -chapter2 Flow control」

#Boolean values, comparison operators, and Boolean operators

Operator  Meaning
==  Equal to
!=  Not equal to
<  Less than
>　　Greater than
<=　　Less than or equal to
>=　　Greater than or equal to

Python considers the integer 42 to be different from the string '42'

• The == operator (equal to) asks whether two values are the same as each other.

• The = operator (assignment) puts the value on the right into the variable on the left.

##Binary Boolean Operators

Expression　　Evaluates to...
True and True　　True
True and False　　False
False and True　　False
False and False　　False

The or operator evaluates an expression to True if either of the two Boolean values is True. If both are False, it evaluates to False

#Flow Control Statements > if, else, and elif`

while Loop Statements
The while loop keeps looping while its condition is True

break Statements

continue Statements

for Loops and the range() Function

print('My name is')
for i in range(5):
    print('Jimmy Five Times (' + str(i) + ')')

The above program works as same as following one.

print('My name is')
i = 0
while i < 5:
    print('Jimmy Five Times (' + str(i) + ')')
    i = i + 1

---

for i in range(12, 16):
    print(i)
->12, 13, 14, 15

for i in range(0, 10, 2):
    print(i)
->0, 2, 4, 6, 8

for i in range(5, -1, -1):
    print(i)
->5, 4, 3, 2, 1, 0

#Importing Modules

Ending a Program Early with sys.exit()