# Named tuples
```python
from collections import namedtuple
Point = namedtuple('Point', ['x', 'y'])

point1 = Point(24, 67)
print(point1.x)
print(point1.y)
```

# Dataclasses
```python
@dataclasses.dataclass
class Person():
    name: Optional[int] = None
    age: Optional[int] = None
```

# Lambda
```python
x = lambda a : a + 10
print(x(5))
# 15
```

# Map
```python
def myfunc(a, b):
return a + b

x = map(myfunc, ('apple', 'banana', 'cherry'), ('orange', 'lemon', 'pineapple'))
# ['appleorange', 'bananalemon', 'cherrypineapple']
```