scify-file-reader

The scify-file-reader package provides a convenient class for handling multiple files with the same structure in a directory. It offers functionality to read and process data from various file types, including CSV, XLSX, Parquet, and JSON.

Installation

You can install scify-file-reader using pip:

pip install scify-file-reader

Usage

To use scify-file-reader, follow these steps:

1. Import the FileReader class:

from scify_file_reader import FileReader

2. Create an instance of the FileReader class, providing the content you want to read. The content can be a string representing a file path, a Path object, or a zipfile.ZipFile object:

content = 'path/to/directory'

reader = FileReader(content)

3. Read the files using the read_files method:

data = reader.read_files()

The read_files method returns a dictionary where the keys are the filenames (without the extension) and the values are pandas DataFrames containing the file data.

For more details on the available methods and parameters, refer to the package documentation.

Examples:

Here's an example that demonstrates how to use scify-file-reader:

Normal Output

from scify_file_reader import FileReader



PATH = '/path/to/directory'



"""

# Supomos que temos estes arquivos dentro do nosso diretório

print(os.listdir(PATH))

# OUT: ['file_1.csv'', 'log_2.csv', 'test_3.csv',

        'file_%Y%m%d%H%M%S.csv', 'log_%Y%m%d%H%M%S.csv', 'test_%Y%m%d%H%M%S.csv', 

        'file_%Y%m%d_%H%M%S.csv', 'log_%Y%m%d_%H%M%S.csv', 'test_%Y%m%d_%H%M%S.csv', 

"""



# Example: Reading files from a directory

reader = FileReader('/path/to/directory')

data = reader.read_files() # read_files accept kwargs from pandas read_ methods



"""

OUTPUT: print(data)

{

    'file_1.csv': <pd.DataFrame>,

    'log_2.csv': <pd.DataFrame>,

    'test_3.csv': <pd.DataFrame>,

    'file_%Y%m%d%H%M%S.csv': <pd.DataFrame>,

    'log_%Y%m%d%H%M%S.csv': <pd.DataFrame>,

    'test_%Y%m%d%H%M%S.csv': <pd.DataFrame>,

    'file_%Y%m%d_%H%M%S.csv': <pd.DataFrame>,

    'log_%Y%m%d_%H%M%S.csv': <pd.DataFrame>,

    'test_%Y%m%d_%H%M%S.csv': <pd.DataFrame>

}

"""

Concatenating patterns:

Use this method when you need to concatenate multiple files with similar patterns into a single consolidated file.

E.g. In the last example, we demonstrate the use of scify-file-reader with a directory containing 9 files that follow common naming patterns, such as 'file', 'log', and 'test'. By joining these files, we can consolidate and analyze their data more effectively. Let's take a look at the example to understand how they are joined.

from scify_file_reader import FileReader



PATH = '/path/to/directory'



"""

# Let's suppose we have these files inside our directory.

print(os.listdir(PATH))

# OUT: ['file_1.csv'', 'log_2.csv', 'test_3.csv',

        'file_%Y%m%d%H%M%S.csv', 'log_%Y%m%d%H%M%S.csv', 'test_%Y%m%d%H%M%S.csv', 

        'file_%Y%m%d_%H%M%S.csv', 'log_%Y%m%d_%H%M%S.csv', 'test_%Y%m%d_%H%M%S.csv', 

"""



# Example: Reading files from a directory

reader = FileReader('/path/to/directory')

data = reader.read_files(join_prefixes=True) #



"""

OUTPUT: print(data)

{

    'file': <pd.DataFrame>,

    'log': <pd.DataFrame>,

    'test': <pd.DataFrame>,

}

"""

Using a specific regular expression

In the example above, all files with common prefixes, such as file_1.csv, file_%Y%m%d%H%M%S.csv, and file_%Y%m%d_%H%M%S.csv, were joined together under the file key in the output.

If you want to use a specific regular expression for filtering your files, you can follow these steps:

from scify_file_reader import FileReader



PATH = '/path/to/directory'



# Example: Reading files from a directory

reader = FileReader('/path/to/directory')



regex = '<some_regex>'

reader.set_prefix_file_pattern_regex(regex)



data = reader.read_files(join_prefixes=True) 

By default the regular expression is ^([A-Z]+)_\d+.

Speficic prefixes instead of regular expressions

If you prefer to use specific prefixes instead of regular expressions, you can utilize the join_custom_prefixes argument. This argument accepts a tuple of prefixes that you want to join together.

from scify_file_reader import FileReader



PATH = '/path/to/directory'



"""

# Supomos que temos estes arquivos dentro do nosso diretório

print(os.listdir(PATH))

# OUT: ['file_1.csv'', 'log_2.csv', 'test_3.csv',

        'file_%Y%m%d%H%M%S.csv', 'log_%Y%m%d%H%M%S.csv', 'test_%Y%m%d%H%M%S.csv', 

        'file_%Y%m%d_%H%M%S.csv', 'log_%Y%m%d_%H%M%S.csv', 'test_%Y%m%d_%H%M%S.csv', 

"""





# Example: Reading files from a directory

reader = FileReader('/path/to/directory')



specific_prefixes = ('file', 'log', 'test')



data = reader.read_files(join_prefixes=True) 



"""

OUTPUT: print(data)

{

    'file': <pd.DataFrame>,

    'log': <pd.DataFrame>,

    'test': <pd.DataFrame>,

}

"""

Contributing

Contributions are welcome! If you have any suggestions, bug reports, or feature requests, please open an issue or submit a pull request on the scify-file-reader repository.