ชื่อ ทดสอบ รหัส 60



In [1]:

    
x = [1,2,3]
y = (1,2,3)



In [2]:

    
type(x)









    Out[2]:





list



In [3]:

    
type(y)









    Out[3]:





tuple



In [4]:

    
x[0] = 5



In [5]:

    
print(x)









    



[5, 2, 3]



In [6]:

    
print(x[1:3])









    



[2, 3]



In [7]:

    
import math as m



In [8]:

    
m.log(10)









    Out[8]:





2.302585092994046



In [9]:

    
m.log2(4)









    Out[9]:





2.0



In [10]:

    
m.log(4,2)









    Out[10]:





2.0



In [11]:

    
import numpy as np
Z = np.array([[1,2,3,4], [5,6,7,8], [9,10,11,12]])



In [12]:

    
Z[1,:]









    Out[12]:





array([5, 6, 7, 8])



In [13]:

    
Z[:,1:2]









    Out[13]:





array([[ 2],
       [ 6],
       [10]])



In [14]:

    
Z[0:2,1:3]









    Out[14]:





array([[2, 3],
       [6, 7]])



In [15]:

    
from time import sleep
from math import sin, cos, radians

# increase 40 to get more wave
for n in range(1, 40):
    circle_1 = 50 * (1 + sin(radians(n*10)))
    circle_2 = 50 * (1 + cos(radians(n*10)))
    print("#".center(int(circle_1)))
    print("*".center(int(circle_2)))
    sleep(0.05)



In [16]:

    
import numpy as np
x = np.array([1+2j,3+4j])
print("First array:")
print(x)
y = np.array([5+6j,7+8j])
print("Second array:")
print(y)
z = np.vdot(x, y)
print("Product of above two arrays:")
print(z)









    



First array:
[ 1.+2.j  3.+4.j]
Second array:
[ 5.+6.j  7.+8.j]
Product of above two arrays:
(70-8j)



In [17]:

    
import numpy as np
x = np.array([1+2j,3+4j])
print("First array:")
print(x)
y = np.array([5+6j,7+8j])
print("Second array:")
print(y)
z = np.dot(x, y)
print("Product of above two arrays:")
print(z)









    



First array:
[ 1.+2.j  3.+4.j]
Second array:
[ 5.+6.j  7.+8.j]
Product of above two arrays:
(-18+68j)



In [18]:

    
import numpy as np
x = np.array([1+2j,3+4j])
print("First array:")
print(x)
y = np.array([5+6j,7+8j])
print("Second array:")
print(y)
z = np.cross(x, y)
print("Product of above two arrays:")
print(z)









    



First array:
[ 1.+2.j  3.+4.j]
Second array:
[ 5.+6.j  7.+8.j]
Product of above two arrays:
-16j



In [19]:

    
def sum_div(number):
    divisors = [1]
    for i in range(2, number):
        if (number % i)==0:
            divisors.append(i)
    return divisors
print(sum_div(12))









    



[1, 2, 3, 4, 6]



In [20]:

    
from math import radians, sin, cos, acos

print("Input coordinates of two points:")
slat = radians(float(input("Starting latitude: ")))
slon = radians(float(input("Ending longitude: ")))
elat = radians(float(input("Starting latitude: ")))
elon = radians(float(input("Ending longitude: ")))

dist = 6371.01 * acos(sin(slat)*sin(elat) + cos(slat)*cos(elat)*cos(slon - elon))
print("The distance is %.2fkm." % dist)









    



Input coordinates of two points:
Starting latitude: 18.245869
Ending longitude: 99.02548
Starting latitude: 18.452223
Ending longitude: 99.14257
The distance is 26.06km.



In [21]:

    
x = [1,2,[3,4,5],'xyz']



In [22]:

    
print(x[-len(x)])



In [23]:

    
len(x)









    Out[23]:





4



In [24]:

    
x









    Out[24]:





[1, 2, [3, 4, 5], 'xyz']



In [25]:

    
print(x[-4])



In [ ]: