bpo-25988: Do not expose abstract collection classes in the collections module. by serhiy-storchaka · Pull Request #10596 · python/cpython

…recation warnings

### What changes were proposed in this pull request?

This PR aims to remove deprecation warnings by importing ABCs from `collections.abc` instead of `collections`.
- python/cpython#10596

### Why are the changes needed?

This will remove deprecation warnings in Python 3.7 and 3.8.

```
$ python -V
Python 3.7.5

$ python python/pyspark/resultiterable.py
python/pyspark/resultiterable.py:23: DeprecationWarning:
Using or importing the ABCs from 'collections' instead of from 'collections.abc'
is deprecated since Python 3.3,and in 3.9 it will stop working
  class ResultIterable(collections.Iterable):
```

### Does this PR introduce any user-facing change?

No, this doesn't introduce user-facing change

### How was this patch tested?

Manually because this is about deprecation warning messages.

Closes #26835 from tirkarthi/spark-30205-fix-abc-warnings.

Authored-by: Karthikeyan Singaravelan <tir.karthi@gmail.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>