1. math library
# Ask Python to print sqrt(25) on line
import math
print math.sqrt(25)
2. sqrt 만 import 해오기 / 전부 import 해오기
# Import *just* the sqrt function from math on line 3!
from math import sort
from math import *
3. library import 해올 때는 되도록 import module 한 다음 module.function 해서 쓸 것. 함수명/변수명 중복되서 막 사용될 수 있음.
import math # Imports the math module
everything = dir(math) # Sets everything to a list of things from math
print everything # Prints 'em all!
4. python 에 기본적으로 내장되어있는 함수들 .upper(), .lower(), str(), len(), max(), min(), abs()
def biggest_number(*args): #여러개의 인자를 넘기는 방법이 특이하다. 오오.
print max(args)
return max(args)
def smallest_number(*args):
print min(args)
return min(args)
def distance_from_zero(arg):
print abs(arg)
return abs(arg)
biggest_number(-10, -5, 5, 10)
smallest_number(-10, -5, 5, 10)
distance_from_zero(-10)
5. max()
# Set maximum to the max value of any set of numbers on line 3!
maximum = max(1, 19231, 2.5)
print maximum
6. min()
# Set minimum to the min value of any set of numbers on line 3!
minimum = min(4, -2 , 10, 123, -123.1)
print minimum
7. abs()
absolute = abs(-42)
print absolute
8. type()
# Print out the types of an integer, a float,
# and a string on separate lines below.
print type(42)
print type(-1.2)
print type('keol')
9.
def shut_down(s):
if s == "yes":
return "Shutting down"
elif s == "no":
return "Shutdown aborted"
else:
return "Sorry"
10.
import math
print math.sqrt(13689)
11.
def distance_from_zero(arg):
if type(arg) == int or type(arg) == float:
return abs(arg)
else:
return "Nope"
