python syntax

reverse a string via string slicing
reverse a string in python.
my_string[???]

my_string[::-1]

enumerate()
target both index and value at index in a list.
for ? , ? in ?

for index, value in enumerate(my_object):

zip()
create a list of tuples consisting of pairs from 2 separate lists.

?(my_list_1, my_list_2)

zip(my_list_1, my_list_2)

.strip()
remove trailing or leading whitepspace/characters
my_string.?()

my_string.strip()
or
my_string.strip(‘char’)

.join()
join items together from an iterable

my_iterable.?()

my_iterable.join()
or
my_iterable.join(‘char’)

list comprehension
rewrite the for loop using list comprehension:

words = ["I", "Love", "Codepath!"] result = [] for word in words: if len(word) > 5: result.append(word) print(result) # Output: ['Codepath!']

result = [word for word in words if len(word) > 5)]

filter/map/list comprehension
rewrite this filter/map function to use list comprehension:

def squareEvens(nums):

    result = []

    for x in nums:

         if x % 2 == 0:

         result.append(x * x)

    return result

result [x*x for x in nums if x % 2 == 0]

two pointers
what common cases are most suited for the two pointers technique

problems mentioning substrings