Ищу задачи, которые можно было бы выполнить

# -*- coding: utf-8 -*-
 
import numpy as np
import matplotlib.pyplot as plt
import math
 
x_min = -2 * math.pi
x_max = 2 * math.pi
y_min = np.sin(-math.pi / 2)
y_max = np.sin(math.pi / 2)
 
x = np.linspace(x_min, x_max, 64)
y = np.sin(x)
 
plt.axis([x_min, x_max, y_min, y_max])
plt.plot(x, y)
plt.show()

import math
for item in [it / 10.0 for it in range(1, 10)]:
    print math.sqrt(item)

item ** 0.5

from timeit import Timer
 
some_int = 10
 
test_sqrt = Timer('sqrt(some_int)', 'from __main__ import some_int; from math import sqrt')
test_power = Timer('some_int ** 0.5', 'from __main__ import some_int')
 
tests_count = 10 ** 7
 
time_sqrt = test_sqrt.timeit(number = tests_count)
time_power = test_power.timeit(number = tests_count)
 
print 'Sqrt time = {}'.format(time_sqrt)
print 'Power time = {}'.format(time_power)

>>> import timeit
>>> t1 = timeit.Timer('12345 ** 0.5')
>>> t2 = timeit.Timer('math.sqrt(12345)', 'import math')
>>> t1.repeat(5)
[0.024723052978515625, 0.01663804054260254, 0.016645193099975586, 0.016638994216918945, 0.016676902770996094]
>>> t2.repeat(5)
[0.17351007461547852, 0.16802287101745605, 0.16178512573242188, 0.17516803741455078, 0.16624999046325684]
>>>

>>> t1.repeat(5, 2000000)
[0.05101513862609863, 0.033390045166015625, 0.03328704833984375, 0.0332789421081543, 0.033277034759521484]
>>> t2.repeat(5, 2000000)
[0.3622000217437744, 0.3333408832550049, 0.3256230354309082, 0.3284268379211426, 0.3268430233001709]
>>>

>>> t1.repeat(5, 2000000)
[0.048274993896484375, 0.03544783592224121, 0.0353851318359375, 0.03536486625671387, 0.035485029220581055]
>>> t2.repeat(5, 2000000)
[0.24847197532653809, 0.24083900451660156, 0.24070405960083008, 0.24070286750793457, 0.2423079013824463]
>>>

import math

from math import sqrt

>>> import timeit
>>> t1 = timeit.Timer('12345 ** 0.5')
>>> t2 = timeit.Timer('sqrt(12345)', 'from math import sqrt')
>>> t1.repeat(5, 2000000)
[0.04012799263000488, 0.033521175384521484, 0.03345298767089844, 0.033273935317993164, 0.03331184387207031]
>>> t2.repeat(5, 2000000)
[0.2669839859008789, 0.2638709545135498, 0.26383304595947266, 0.2638978958129883, 0.2646369934082031]
>>>

>>> t1.repeat(5, 2000000)
[0.044081926345825195, 0.035444021224975586, 0.03537297248840332, 0.035407066345214844, 0.03535890579223633]
>>> t2.repeat(5, 2000000)
[0.21387791633605957, 0.20496487617492676, 0.2024679183959961, 0.20179319381713867, 0.2024240493774414]
>>>

a = [10, 20, 30, 40, 50]
b = []
for i in a:
    if a.index(i)%2 ==0:
        b.append(i)
    else:
        b.append(-i)
print(sum(b))
print(a[0]+a[-1])
print(a[0]-a[1])

# -*- coding: utf-8 -*-
def is_lucky_number(num):
    assert 10 ** 5 < num <= 10 ** 6
    return sum([int(i) for i in str(num)][:3]) == sum([int(i) for i in str(num)][3:])
 
for i in range(111111, 10 ** 6):
    if is_lucky_number(i):
        print i

def sum_3_digit(num):
    return num // 100 + num % 100 // 10 + num % 10 # единицы, десятки и сотни
 
for i in range(111111, 10 ** 6):
    if sum_3_digit(i // 1000) == sum_3_digit(i % 1000):
        print i