PyHelpers: an open-source toolkit for facilitating Python users' data manipulation tasks

PyHelpers is an open-source Python package designed as a lite tool kit for facilitating data (pre)processing tasks. It provides a miscellaneous collection of easy-to-use Python functions/classes that can help with day-to-day reading/writing of file-like objects, manipulation of various types of data (e.g. geographical data and textual data) and communication with a SQL database.

 

This release:

1.2.6 (6 November 2020)

      Notable changes since 1.2.5:

• Renamed two functions in the module geom:
  • find_closest_point_from() to find_closest_point();
  • find_closest_points_between() to find_closest_points().
• Reduced the number of essential dependencies for installing the package (see also the installation note).
• Enabled direct access to all functions/classes from importing the package without having to specifying the modules they reside in.
• Fixed a minor bug in the function fake_requests_headers() in the module ops.

 

Release history:

1.2.5 (12 October 2020)

      Notable changes since 1.2.4:

• Renamed the function rm_dir() to delete_dir() in the module dir.
• Moved the function save_web_page_as_pdf() from the module text to store.
• Removed two functions from the module ops: get_variable_name() and get_variable_names().
• Improved the following function/class:
  • save() in the module store;
  • PostgreSQL in the module sql.

1.2.4 (7 September 2020)

      Notable changes since 1.2.3:

• Improved the function fake_requests_headers() in the module ops.

1.2.3 (7 September 2020)

      Notable changes since 1.2.2:

• Fixed a few bugs in the following functions/class:
  • download_file_from_url() in the module ops;
  • get_specific_filepath_info() in the module store;
  • PostgreSQL in the module sql.
• Added a new function fake_requests_headers() to the module ops.

1.2.2 (18 July 2020)

      Notable changes since 1.2.1:

• Improved the following functions:
  • get_specific_filepath_info() in the module store;
  • split_list() and get_all_values_from_nested_dict() in the module ops.

1.2.1 (1 July 2020)

      Note that the release 1.2.0 had been permanently deleted.

      Notable changes since 1.1.2:

• Integrated the module download into ops and made the following changes:
  • renamed the function download() to download_file_from_url();
  • added a new function convert_md_to_rst();
  • improved the following functions: split_list_by_size(), split_list(), get_extreme_outlier_bounds(),
    interquartile_range(), find_closest_date() and detect_nan_for_str_column().
• Moved the function save_web_page_as_pdf() from the module store to text.
• Improved the following functions/class:
  • get_specific_filepath_info(), save_fig(), save_svg_as_emf(), seven_zip() and load_csr_matrix() in the module store;
  • PostgreSQL in the module sql.

1.1.2 (30 May 2020)

      Note that the release 1.1.1 had been permanently deleted.

      Notable changes since 1.1.0:

• Renamed the following function/method:
  • save_excel() to save_spreadsheet() in the module store;
  • .disconnect() to .disconnect_database() of the class PostgreSQL in the module sql.
• Removed the function csr_matrix_to_dict() from the module text.
• Removed redundant parameters from functions in the module store.
• Improved the following functions by adding optional parameters:
  • cd(), cdd(), cd_data and rm_dir() in the module dir;
  • download() in the module download;
  • save_svg_as_emf() and save_web_page_as_pdf() in the module store.
• Added new functions:
  • to the module geom: sketch_square();
  • to the module ops: create_rotation_matrix() and dict_to_dataframe();
  • to the module store: save_multiple_spreadsheets(), load_multiple_spreadsheets(),
    unzip(), seven_zip() and load_csr_matrix();
  • to the module text: remove_punctuation(), count_words(), calculate_idf(), calculate_tf_idf(),
    euclidean_distance_between_texts() and cosine_similarity_between_texts().

1.1.0 (22 April 2020)

      Notable changes since 1.0.26:

• Made a few modifications to the class sql.PostgreSQL to speed up importing data into, and retrieving data from, a PostgreSQL database.
• Fixed a minor bug in the function text.find_matched_str().
• Improved the two modules store and text.

1.0.26 (12 March 2020)

      Notable changes since 1.0.25:

• Fixed a few bugs in the module store.

1.0.25 (6 March 2020)

      Notable changes since 1.0.24:

• Improved the functions, osgb36_to_wgs84() and wgs84_to_osgb36(), in the module geom.

1.0.24 (28 January 2020)

      Note that the release 1.0.23 had been permanently deleted.

      Notable changes since 1.0.22:

• Fixed a bug in the module sql.

1.0.22 (27 January 2020)

      Notable changes since 1.0.21:

• Renamed the function divide_list_into_chunks() to split_list_by_size() in the module ops.
• Added two new functions to the module ops: split_list() and split_iterable().
• Improved the following function/class:
  • gdal_configurations() in the module settings;
  • PostgreSQL in the module sql.

1.0.21 (20 January 2020)

      Notable changes since 1.0.20:

• Added a new module sql.
• Added a new function detect_nan_for_str_column() to the module ops.

1.0.20 (7 January 2020)

      Notable changes since 1.0.19:

• Fixed a few minor bugs in the module store.

1.0.19 (28 November 2019)

      Note that the release 1.0.18 had been permanently deleted.

      Notable changes since 1.0.17:

• Renamed the module misc to ops; moved the function csr_matrix_to_dict() to the module text.
• Fixed minor bugs:
  • save_feather() and load_feather() in the module store;
  • download() in the module download;
  • mpl_preferences() in the module settings.
• Added new functions:
  • show_square(), locate_square_vertices() and locate_square_vertices_calc() to the module geom;
  • is_dirname() to the module dir.
• Improved the module store with modifications to the functions: save_pickle(), load_pickle(), save_json(), load_json() and save().

1.0.17 (10 September 2019)

      Notable changes since 1.0.16:

• Improved the function rm_dir() in the module dir.
• Tidied up the code of the three modules: misc, geom and store.

1.0.16 (3 September 2019)

      This is a release of a brand-new version.

      Note that the initial releases (of early versions up to 1.0.15) had been permanently deleted.