In one line in Python

one_line.py

items1 = ['abc', 'bcd', 'cde']
items2 = [[1, 2], [3, 4], [5, 6]]

# return first result from iterator (with optional default)
r1 = next((item for item in items1 if 'd' in item), None)
print(r1)

# return first True result
r2 = any('d' in item for item in items1)
print(r2)

# check all conditions
r3 = all('c' in item for item in items1)
print(r3)

# flatten a list of lists
r4 = [subitem for item in items2 for subitem in item]
print(r4)