random.txt

what are Django Q and F functions
what are generator expression. Examples
How to stop a generator stop midway? Take input from user to stop. How ?
Implement Singleton class
'is' operator in python. Why is "id(1) is id(1)", False 
How to create dynamic classes in runtime
    Foo = type('Foo', (), {'some_method': some_method})
    https://jeffknupp.com/blog/2013/12/28/improve-your-python-metaclasses-and-dynamic-classes-with-type/
What is the difference between iterator vs iterables
__slots__ and their usecase. What if a class contains some attributes which are not defined in slots, will they throw error?
what are closure and partials
IMPLEMENT: counting sort
ALGO: median in infinite input of numbers in O(n)
Why GIL?
    CPython (most used python implementation) is not thread safe. In order, to support multi-threaded python programs,
    CPython provides a global lock that must be held by current thread before it can safely access python objects.

25/04/2018
- mro
- list comprehension
- how python debugger work
- Threading (greenthreads, pthreads, twisted)
- files and csv reader
- garbage collection
- dict implementation
- decorator
- map, reduce, filter
- name mangling
- id(x) == id(y) for string and int
- decorator param
- closure
- weakref and how it works
- weakref and weakproxy


1. Generate 100 numbers which are divisible by 2 and 7 in pythonic way
2. Given 100 test functions add a retry logic to retry the test 3 times and fail if it fails 3 times else pass
3. What are generators? Give example?
4. How to iterate over a dict using generators
5. What are clousres? Can the value in the outside function be modified inside the inner function?
6. Given a file with 1000 users write a program to generate unique alphanumeric password b/w length 8-10 and then save these passords in the file
7. What does str += ch does? What is the complexity?
8. How is dict implemented internally? 
9. St1 = “abc” , str2 =“abc” , str1 == str2 ? Why?
10. What are slots? Why will you use it?
11. What is lambda function?
12. Why GIL? How is thread management done in python?
13. Exception handling in python?
https://mail.python.org/pipermail/python-list/2005-March/346300.html
	
getattr, hasattr, dynamic resolve of methods
cyclic imports (module a imports b and b imports a)
multi level decorator, run once (five function each decorated, how many times it will be called, how to restrict call to just once)
statement decorator, like decorator over print
write your own exception
when is args and kwargs used. pep specification
regex to validate date
threading, eventlet spawn