830실습

def g(x=3):
    result=x+1
    return result
g()
print(g)
import inspect
print(inspect.getsource(g))
import numpy as np 

x=np.array([1,-2,3,-4,0])
con=[x>0, x==0,x<0]
choices=["양수","0","음수"]
result=np.select(con, choices)

# for loop 
for i in range(1,4):
    print(f"Here is {i}")

[f"Here is {i}" for i in range(1,4)]

name="John"
age="30"
f"Hello, my name is {name} and I am {age} year old."

greetings=[f"이름:{name}, 나이:{age}."for name, age in zip(name, age)]

i=0
while i>10:
    i+=3
    print(i)

import pandas as pd
data=pd.DataFrame({
    "A":[1,2,3],
    "B":[4,5,6]
})

data.apply(sum, axis=0)
data.apply(sum, axis=1)

def my_func(x, const=3):
    return max(x)**2 + const

my_func([4,5,6,7],3)
# 함수 환경 

def my_func(x):
    y=1
    result= x+y
    return result

#-------------------------------
def outer_func():
    def inner_func(input):
        return input + 2
# check env of inner_func()
    print(inner_func.__code__.co_varnames)
outer_func()

def my_func(x):
    global y
    y+=1
    return x + y

my_func(3)

def add_many(*args):
    result=0
    for i in args:
        result +=i
    return result

add_many([1,2,3])

def first_many(*args):
    return args[0]

**별표 두 개는 키워드르 딕셔너리로 만들어줌 
def my_twostars(choice, **kwargs):
    if choice =="first":
        return kwargs[0]
    elif choice =="second":
        return kwargs[0]
    else:
        return kwargs
    
my_twostars("second", age=30,name="issac")