time_complexity.py

my_li = ['a', 'b', 'asdf', '9876']

for element in my_li:
    print(f"Element: {element} has the index of {my_li.index(element)}")  # list.index() is O(n)

for element in my_li:
    for element_2 in my_li:
        if element_2 == element:
            pass

for i, element in enumerate(my_li):
    print(f"Element: {element} has the index of {i}")

my_dict = {'key': 1, "key2": "some val", "key3": "val"}
print(my_dict['key'])  # O(1)

# time complexity O(n)
if "key3" in my_dict.keys():
    print("key3 in the dictionary")
else:
    print("key3 NOT in the dictionary")


# time complexity O(1)
try:
    print(f"key3 with value of {my_dict['key3']} in the dictionary")
except KeyError:
    print("key3 NOT in the dictionary")