Python Coding Interview

Python Coding Interview

Python Advanced

Use enumerate() to iterate over both indices and values

Debug problematic code with breakpoint()

Format strings effectively with f-strings

Sort lists with custom arguments

Use generators instead of list comprehensions to conserve memory

Define default values when looking up dictionary keys

Count hashable objects with the collections.Counter class

Use the standard library to get lists of permutations and combinations

enumerate()

enumerate() is a built-in function to iterate through a sequence and keep track of both the index and the number.

>>> list(range(11))
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> list(enumerate([1, 2, 3]))
[(0, 1), (1, 2), (2, 3)]
>>> list(enumerate([1, 2, 3], start=10))
[(10, 1), (11, 2), (12, 3)]

 list = [45, 22, 14, 65, 97, 72].
for i, num in enumerate(numbers):
    if num % 3 == 0:
        numbers[i] = "fizz"
    if num % 5 == 0:
        numbers[i] = "buzz"
    if num % 5 == 0 and num % 3 == 0:
        numbers[i] = "fizzbuzz"

for i, num in enumerate(numbers):
    if num % 5 == 0 and num % 3 == 0:
        numbers[i] = "fizzbuzz"
    elif num % 3 == 0:
        numbers[i] = "fizz"
    elif num % 5 == 0:
        numbers[i] = "buzz"

Jupyter

Jupyter Notebook Interface

https://ipython.org/index.html

Jupyter Notebook

https://jupyter.readthedocs.io/en/latest/install.html

refs

https://realpython.com/lessons/python-coding-interview-tips-overview/

https://realpython.com/courses/python-range-function/

https://realpython.com/lessons/use-enumerate-keep-running-index/

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