[Python tutorial] 4. Data type - Numbers

Numbers

• int
• float
• complex

Integer: int

x = 1
y = 100
z = -300

Float

x = 1.10
y = 1.0
z = -35.59
a = 35e3 # scientific numbers with an "e"
b = 12E4
c = -87.7e100

Complex

x = 3+5j
y = 5j
z = -5j

Type Conversion

int(), float(), complex()

x = 1    # int
y = 2.8  # float
z = 1j   # complex, 다른 타입으로 변환 불가
a = float(x) # 1.0
b = int(y) # 2
c = complex(x) # (1+0j)

Random Number: random()

Random module reference

import random

print(random.randrange(1, 10))

Casting

x = int(1)   # 1
y = int(2.8) # 2
z = int("3") # 3

x = float(1)     # 1.0
y = float(2.8)   # 2.8
z = float("3")   # 3.0
w = float("4.2") # 4.2

x = str("s1") # 's1'
y = str(2)    # '2'
z = str(3.0)  # '3.0'