Day_12.py

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

# # Question 44
# 
# ### **Question:**
# 
# > **_Write a program which can map() to make a list whose elements are square of numbers between 1 and 20 (both included)._**
# 
# ---
# 
# ### Hints:
# 
# > **_Use map() to generate a list. Use lambda to define anonymous functions._**
# 
# ---
# 
# 
# 
# **Solutions:**

# In[1]:


def sqr(x):
    return x * x


squaredNumbers = list(map(sqr, range(1, 21)))
print(squaredNumbers)


# ---
# 
# # Question 45
# 
# ### **Question:**
# 
# > **_Define a class named American which has a static method called printNationality._**
# 
# ---
# 
# ### Hints:
# 
# > **_Use @staticmethod decorator to define class static method.There are also two more methods.To know more, go to this [link](https://realpython.com/blog/python/instance-class-and-static-methods-demystified/)._**
# 
# ---
# 
# 
# 
# **Solutions:**

# In[2]:


class American:
    @staticmethod
    def printNationality():
        print("I am American")


american = American()
american.printNationality()  # this will not run if @staticmethod does not decorates the function.
# Because the class has no instance.

American.printNationality()  # this will run even though the @staticmethod
# does not decorate printNationality()


# ---
# 
# # Question 46
# 
# ### **Question:**
# 
# > **_Define a class named American and its subclass NewYorker._**
# 
# ---
# 
# ### Hints:
# 
# > **Use class Subclass(ParentClass) to define a subclass.\***
# 
# ---
# 
# 
# 
# **Solutions:**

# In[3]:


class American:
    pass


class NewYorker(American):
    pass


american = American()
newyorker = NewYorker()

print(american)
print(newyorker)


# ---