FerdinaKusumah

"""Merge list"""

"""string list"""
words = ["a", "b", "c", "d"]
print(f'merge string list is {",".join(words)}')
# merge string list is a,b,c,d

"""number list"""
number = [1, 2, 3, 4, 5, 6]
print(f'merge number list is {",".join(map(str, number))}')

FerdinaKusumah

"""For else"""
arr = [1, 2, 3, 4]
find_num = 10

for num in arr:
    if find_num == num:
        break
else:
    print(f'{find_num} is not exists in array')

FerdinaKusumah

"""Sort dictionary by key or value"""
fruits = dict()
fruits["apple"] = 3
fruits["banana"] = 2
fruits["mango"] = 5

"""Sort by key"""
sort_key = sorted(fruits.items(), key=lambda f: f[0])
print(f'Sort by key = {dict(sort_key)}')
# Sort by key = {'apple': 3, 'banana': 2, 'mango': 5}

FerdinaKusumah

"""Get value from dictionary with default value"""
fruits = dict()
fruits["apple"] = 2
fruits["banana"] = 3
# {'apple': 2, 'banana': 3}

pear = fruits.get("pear", 3)
print(pear)
# 3

FerdinaKusumah

from copy import deepcopy
"""Copy or clone variable"""
a = [1, 2, 3]
b = deepcopy(a)

"""Try to add another data in a"""
a.append(4)

# a = [1, 2, 3, 4]
# b = [1, 2, 3]

FerdinaKusumah

"""Chain function call"""


def sum_number(x: int, y: int) -> int:
    return x + y


def sub_number(x: int, y: int) -> int:
    return x - y

FerdinaKusumah

"""Ternary operator"""
a = 5
b = 10
is_greater = False if a > b else True
# True

FerdinaKusumah

"""Chain comparison"""
a = 5
b = 10
find = 3
middle = find < a < b
# True
found = find == 3 < a < b
# True

FerdinaKusumah

"""Transpose 2D List"""
arr = [["a", "b"], ["b", "c"], ["d", "e"]]
transpose = list(zip(*arr))
print(f'Transpose list from {arr} to {transpose}')
# Transpose list from [['a', 'b'], ['b', 'c'], ['d', 'e']] to [('a', 'b', 'd'), ('b', 'c', 'e')]

FerdinaKusumah

"""Reverse List"""
arr = ["1", "2", "b", "c", "d"]
reverse_arr_1 = arr[::-1]
# ['d', 'c', 'b', '2', '1']
"""First way"""
# !! emosewa si nohtyp
"""Second way"""
reverse_arr_2 = list(reversed(arr))
# ['d', 'c', 'b', '2', '1']