#!/usr/bin/env python
# coding: utf-8

# In[7]:


# http://python.math-hse.info
my_numbers = [6.0, 8, 2, 15]
for number in my_numbers:
    print(number + 1)
    print("Next number, please")
print("That's all")


# In[9]:


# дан список, содержащий числа
# найти сумму этих чисел
numbers = [7, 8, 12, 765, 3, 8, 65.7]
s = 0
for number in numbers:
    s = s + number
print(s)


# In[10]:


sum(numbers)


# In[11]:


sum = 7


# In[12]:


sum(numbers)


# In[13]:


del sum


# In[14]:


sum(numbers)


# In[18]:


some_str = "this     is \t a\n\ntest"


# In[21]:


some_str


# In[22]:


print(some_str)


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words = some_str.split()


# In[24]:


words


# In[25]:


s = "Hello, world! This is a test!"


# In[26]:


sentences = s.split("!")


# In[27]:


sentences


# In[28]:


s


# In[44]:


words = ["hello", "world", "test"]
line = ", ".join(words)


# In[45]:


line


# In[31]:


'"'


# In[47]:


for i in range(5):
    print("Hello!")
    print("i =", i)


# In[48]:


range(4)


# In[49]:


list(range(5))


# In[50]:


list(range(2, 5))


# In[53]:


list(range(2, 17, 3))


# In[56]:


list(range(9, 1, -1))


# In[57]:


# Don't!
numbers = [7, 8, 2, 54]
s = 0
for i in range(len(numbers)):
    s = s + numbers[i]
print(s)


# In[58]:


len(numbers)


# In[59]:


my_list = [0, 10, 20, 30, 40, 50]


# In[60]:


my_list[2:4]


# In[61]:


my_list[1:5:2]


# In[62]:


my_list[::-1]


# In[63]:


numbers_as_str = ['7', '12', '3', '45']
# создать список, в котором эти числа записаны как числа
numbers_as_int = []
for number in numbers_as_str:
    numbers_as_int.append(int(number))


# In[64]:


numbers_as_int


# In[65]:


type(3.)


# In[66]:


numbers = [6, 9, 15]
for number in numbers:
    number = number + 1
print(numbers)


# In[67]:


x, y = [5, 10]


# In[68]:


my_tuple = (6, 12, "Hello")


# In[69]:


my_tuple


# In[70]:


my_tuple[1]


# In[71]:


my_tuple[1] = 9876


# In[80]:


pairs = [(1, 6), (8, 3), (2, 5), (7, 3)]


# In[81]:


pairs[2]


# In[82]:


pairs


# In[83]:


for a, b in pairs:
    print("a =", a)
    print("b =", b)
    print("Next item")


# In[84]:


some_list = ["Hello", "world", "test"]
for i, element in enumerate(some_list):
    print("word", element, "position", i)


# In[85]:


list(enumerate(some_list))


# In[93]:


numbers = [3, 8, 9, 12]
for i, x in enumerate(numbers):
    numbers[i] = x + 1


# In[91]:


numbers


# In[92]:


numbers


# In[89]:


for x in numbers[1:]:
    print(x)


# In[94]:


print(*numbers, sep="\n")


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