ChIter - iterable as a chain
Requirements
- Python 3.7+
Installation
pip install chiterDocumentation
Coming soon
Why?
- Chains do not require saving the intermediate state in temporary variables
- Look more readable
Examples
It is necessary to get the sum of all numbers from the following sequence:"23,45,67\n45,56,55\n\n45,a,5\n-45,56,0"
first way
from itertools import chain
data = "23,45,67\n45,56,55\n\n45,a,5\n-45,56,0"
chunks = (chunk.split(',') for chunk in data.split())
flat_data = chain.from_iterable(chunks)
items = (int(item) for item in flat_data if not item.isalpha())
result = sum(items)
assert result == 352second way
from itertools import chain
data = "23,45,67\n45,56,55\n\n45,a,5\n-45,56,0"
result = sum((
int(item)
for item in chain.from_iterable(map(lambda c: c.split(','), data.split()))
if not item.isalpha()
))
assert result == 352chiter way
from chiter import ChIter as I
data = "23,45,67\n45,56,55\n\n45,a,5\n-45,56,0"
result = (I(data.split())
.map(lambda x: x.split(','))
.flat()
.filterfalse(str.isalpha)
.map(int)
.sum())
assert result == 352
