In [ ]:

    

# ./ -> 현재 폴더
# ../ -> 상위폴더


    

In [14]:

    

f = open("./animals.txt", "r") #mode -> w,r, wr


    

In [6]:

    

# read, readline, readlines


    

In [9]:

    

f.read() #파일의 전체 데이터


    

    
Out[9]:





'bird\nbjs\nsih'

In [13]:

    

f.readline()


    

    
Out[13]:





'bird\n'

In [15]:

    

f.readlines()


    

    
Out[15]:





['bird\n', 'bjs\n', 'sih']

In [16]:

    

f = open("./animals.txt", "w")


    

In [17]:

    

f.write("hellow world")


    

In [18]:

    

f.close()


    

In [19]:

    

with open("./anmials.txt", "w") as f:
    f.write("hellow world")
#f.close()가 담겨있음


    

In [21]:

    

with open("./stars.txt", "w")as f:
    for i in range(5):
        f.write("*" * (i+1))


    

In [ ]:

    

# 작업의 자동화


    

In [35]:

    

def print_star(count):
    """
    this function makes star
    """
    for i in range(count):
        print("*" * (i+1))


    

In [29]:

    

print_star(3)


    

    




*
**
***

In [36]:

    

print_star(int(input("count?")))


    

    




count?5
*
**
***
****
*****

In [37]:

    

print_star?  # 위에 주석으로 함수의 description 을 할 수 있다.


    

In [6]:

    

import scipy.stats
import scipy as sp
mu = 0
std = 1
rv = sp.stats.norm(mu, std)


    

    
Out[6]:





<scipy.stats._distn_infrastructure.rv_frozen at 0x4048e70>

In [11]:

    

import numpy as np
import matplotlib.pyplot as plt
xx = np.linspace(-5, 5, 100)
plt.plot(xx, rv.pdf(xx))
plt.show()


    

In [13]:

    

# normality test // qq plot
np.random.seed(0)
x = np.random.randn(100)
plt.figure(figsize=(7,7))
sp.stats.probplot(x, plot=plt)
plt.show()


    

In [ ]:

    




    

In [ ]:

    




    

In [ ]: