Columns and DataType Not Explicitly Set on line 62 of data_utils.py

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#10,949 创建于 2023年11月21日 2 条评论 0 个 reaction 已指派 1 人在 GitHub 查看

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描述

samples

Hello!

I found an AI-Specific Code smell in your project.
The smell is called: Columns and DataType Not Explicitly Set

You can find more information about it in this paper: https://dl.acm.org/doi/abs/10.1145/3522664.3528620.

According to the paper, the smell is described as follows:

Problem	If the columns are not selected explicitly, it is not easy for developers to know what to expect in the downstream data schema. If the datatype is not set explicitly, it may silently continue the next step even though the input is unexpected, which may cause errors later. The same applies to other data importing scenarios.
Solution	It is recommended to set the columns and DataType explicitly in data processing.
Impact	Readability

Example:


### Pandas Column Selection
import pandas as pd
df = pd.read_csv('data.csv')
+ df = df[['col1', 'col2', 'col3']]

### Pandas Set DataType
import pandas as pd
- df = pd.read_csv('data.csv')
+ df = pd.read_csv('data.csv', dtype={'col1': 'str', 'col2': 'int', 'col3': 'float'})

You can find the code related to this smell in this link: https://github.com/GoogleCloudPlatform/python-docs-samples/blob/161448f276cd6fbe697c83e2ec55c4828e9143fa/people-and-planet-ai/timeseries-classification/data_utils.py#L52-L72.

I also found instances of this smell in other files, such as:

File: https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/composer/2022_airflow_summit/data_analytics_process_expansion.py#L140-L150 Line: 145
.

I hope this information is helpful!