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count_by()   A

Complexity

Conditions 2

Size

Total Lines 12

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 2
c 1
b 0
f 0
dl 0
loc 12
rs 9.4285
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from collections import defaultdict
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Coding Style introduced by
This module should have a docstring.

The coding style of this project requires that you add a docstring to this code element. Below, you find an example for methods:

class SomeClass:
    def some_method(self):
        """Do x and return foo."""

If you would like to know more about docstrings, we recommend to read PEP-257: Docstring Conventions.

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2
from typing import Sequence, Dict
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Configuration introduced by
The import typing could not be resolved.

This can be caused by one of the following:

1. Missing Dependencies

This error could indicate a configuration issue of Pylint. Make sure that your libraries are available by adding the necessary commands.

# .scrutinizer.yml
before_commands:
    - sudo pip install abc # Python2
    - sudo pip3 install abc # Python3
Tip: We are currently not using virtualenv to run pylint, when installing your modules make sure to use the command for the correct version.

2. Missing __init__.py files

This error could also result from missing __init__.py files in your module folders. Make sure that you place one file in each sub-folder.

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def count_by(records: Sequence[Dict], field_name: str) -> defaultdict:
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    """
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    Frequency each value occurs in a record sequence for a given field name.
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    """
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    counter = defaultdict(int)
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    for record in records:
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        name = record[field_name]
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        counter[name] += 1
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    return counter
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