Metadata-Version: 2.1 Name: wasabi Version: 0.6.0 Summary: A lightweight console printing and formatting toolkit Home-page: https://ines.io Author: Ines Montani Author-email: ines@explosion.ai License: MIT Platform: UNKNOWN Description-Content-Type: text/markdown # wasabi: A lightweight console printing and formatting toolkit Over the years, I've written countless implementations of coloring and formatting utilities to output messages in our libraries like [spaCy](https://spacy.io), [Thinc](https://github.com/explosion/thinc) and [Prodigy](https://prodi.gy). While there are many other great open-source options, I've always ended up wanting something slightly different or slightly custom. This package is still a work in progress and aims to bundle those utilities in a standardised way so they can be shared across our other projects. It's super lightweight, has zero dependencies and works across Python 2 and 3. [![Azure Pipelines](https://img.shields.io/azure-devops/build/explosion-ai/public/1/master.svg?logo=azure-pipelines&style=flat-square)](https://dev.azure.com/explosion-ai/public/_build?definitionId=1) [![PyPi](https://img.shields.io/pypi/v/wasabi.svg?style=flat-square&logo=pypi&logoColor=white)](https://pypi.python.org/pypi/wasabi) [![conda](https://img.shields.io/conda/vn/conda-forge/wasabi.svg?style=flat-square&logo=conda-forge/logoColor=white)](https://anaconda.org/conda-forge/wasabi) [![GitHub](https://img.shields.io/github/release/ines/wasabi/all.svg?style=flat-square&logo=github)](https://github.com/ines/wasabi) [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg?style=flat-square)](https://github.com/ambv/black) ## πŸ’¬ FAQ ### Are you going to add more features? Yes, there's still a few of helpers and features to port over. However, the new features will be heavily biased by what we (think we) need. I always appreciate pull requests to improve the existing functionality – but I want to keep this library as simple, lightweight and specific as possible. ### Can I use this for my projects? Sure, if you like it, feel free to adopt it! Just keep in mind that the package is very specific and not intended to be a full-featured and fully customisable formatting library. If that's what you're looking for, you might want to try other packages – for example, [`colored`](https://pypi.org/project/colored/), [`crayons`](https://github.com/kennethreitz/crayons), [`colorful`](https://github.com/timofurrer/colorful), [`tabulate`](https://bitbucket.org/astanin/python-tabulate), [`console`](https://github.com/mixmastamyk/console) or [`py-term`](https://github.com/gravmatt/py-term), to name a few. ### Why `wasabi`? I was looking for a short and descriptive name, but everything was already taken. So I ended up naming this package after one of my rats, Wasabi. πŸ€ ## βŒ›οΈ Installation ```bash pip install wasabi ``` ## πŸŽ› API ### function `msg` An instance of `Printer`, initialized with the default config. Useful as a quick shortcut if you don't need to customize initialization. ```python from wasabi import msg msg.good("Success!") ``` ### class `Printer` #### method `Printer.__init__` ```python from wasabi import Printer msg = Printer() ``` | Argument | Type | Description | Default | | ----------------- | --------- | ------------------------------------------------------------- | ------------- | | `pretty` | bool | Pretty-print output with colors and icons. | `True` | | `no_print` | bool | Don't actually print, just return. | `False` | | `colors` | dict | Add or overwrite color values, names mapped to `0`-`256`. | `None` | | `icons` | dict | Add or overwrite icon. Name mapped to unicode. | `None` | | `line_max` | int | Maximum line length (for divider). | `80` | | `animation` | unicode | Steps of loading animation for `Printer.loading`. | `"⠙⠹⠸⠼⠴⠦⠧⠇⠏"` | | `animation_ascii` | unicode | Alternative animation for ASCII terminals. | `"\|/-\\"` | | `hide_animation` | bool | Don't display animation, e.g. for logs. | `False` | | `ignore_warnings` | bool | Don't output messages of type `MESSAGE.WARN`. | `False` | | `env_prefix` | unicode | Prefix for environment variables, e.g. `WASABI_LOG_FRIENDLY`. | `"WASABI"` | | `timestamp` | bool | Add timestamp before output. | `False` | | **RETURNS** | `Printer` | The initialized printer. | - | #### method `Printer.text` ```python msg = Printer() msg.text("Hello world!") ``` | Argument | Type | Description | Default | | ---------- | -------------- | ---------------------------------------------------------------------------------------------------------------------- | ------- | | `title` | unicode | The main text to print. | `""` | | `text` | unicode | Optional additional text to print. | `""` | | `color` | Β unicode / int | Color name or value. | `None` | | `icon` | unicode | Name of icon to add. | `None` | | `show` | bool | Whether to print or not. Can be used to only output messages under certain condition, e.g. if `--verbose` flag is set. | `True` | | `spaced` | bool | Whether to add newlines around the output. | `False` | | `no_print` | bool | Don't actually print, just return. Overwrites global setting. | `False` | | `exits` | int | If set, perform a system exit with the given code after printing. | `None` | #### method `Printer.good`, `Printer.fail`, `Printer.warn`, `Printer.info` Print special formatted messages. ```python msg = Printer() msg.good("Success") msg.fail("Error") msg.warn("Warning") msg.info("Info") ``` | Argument | Type | Description | Default | | -------- | ------- | ---------------------------------------------------------------------------------------------------------------------- | ------- | | `title` | unicode | The main text to print. | `""` | | `text` | unicode | Optional additional text to print. | `""` | | `show` | bool | Whether to print or not. Can be used to only output messages under certain condition, e.g. if `--verbose` flag is set. | `True` | | `exits` | int | If set, perform a system exit with the given code after printing. | `None` | #### method `Printer.divider` Print a formatted divider. ```python msg = Printer() msg.divider("Heading") ``` | Argument | Type | Description | Default | | -------- | ------- | ---------------------------------------------------------------------------------------------------------------------- | ------- | | `text` | unicode | Headline text. If empty, only the line is printed. | `""` | | `char` | unicode | Single line character to repeat. | `"="` | | `show` | bool | Whether to print or not. Can be used to only output messages under certain condition, e.g. if `--verbose` flag is set. | `True` | | `icon` | unicode | Optional icon to use with title. | `None` | #### contextmanager `Printer.loading` ```python msg = Printer() with msg.loading("Loading..."): # Do something here that takes longer time.sleep(10) msg.good("Successfully loaded something!") ``` | Argument | Type | Description | Default | | -------- | ------- | ---------------------------------- | ------- | | `text` | unicode | The text to display while loading. | `""` | #### method `Printer.table`, `Printer.row` See [Tables](#tables). #### property `Printer.counts` Get the counts of how often the special printers were fired, e.g. `MESSAGES.GOOD`. Can be used to print an overview like "X warnings" ```python msg = Printer() msg.good("Success") msg.fail("Error") msg.warn("Error") print(msg.counts) # Counter({'good': 1, 'fail': 2, 'warn': 0, 'info': 0}) ``` | Argument | Type | Description | | ----------- | --------- | ---------------------------------------------------- | | **RETURNS** | `Counter` | The counts for the individual special message types. | ### Tables #### function `table` Lightweight helper to format tabular data. ```python from wasabi import table data = [("a1", "a2", "a3"), ("b1", "b2", "b3")] header = ("Column 1", "Column 2", "Column 3") widths = (8, 9, 10) aligns = ("r", "c", "l") formatted = table(data, header=header, divider=True, widths=widths, aligns=aligns) ``` ``` Column 1 Column 2 Column 3 -------- --------- ---------- a1 a2 a3 b1 b2 b3 ``` | Argument | Type | Description | Default | | ----------- | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | -------- | | `data` | iterable / dict | The data to render. Either a list of lists (one per row) or a dict for two-column tables. | | | `header` | iterable | Optional header columns. | `None` | | `footer` | iterable | Optional footer columns. | `None` | | `divider` | bool | Show a divider line between header/footer and body. | `False` | | `widths` | iterable / `"auto"` | Column widths in order. If `"auto"`, widths will be calculated automatically based on the largest value. | `"auto"` | | `max_col` | int | Maximum column width. | `30` | | `spacing` | int | Number of spaces between columns. | `3` | | `aligns` | iterable / unicode | Columns alignments in order. `"l"` (left, default), `"r"` (right) or `"c"` (center). If If a string, value is used for all columns. | `None` | | `multiline` | bool | If a cell value is a list of a tuple, render it on multiple lines, with one value per line. | `False` | | **RETURNS** | unicode | The formatted table. | | #### function `row` ```python from wasabi import row data = ("a1", "a2", "a3") formatted = row(data) ``` ``` a1 a2 a3 ``` | Argument | Type | Description | Default | | ----------- | ------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- | -------- | | `data` | iterable | The individual columns to format. | | | `widths` | iterable / int / `"auto"` | Column widths, either one integer for all columns or an iterable of values. If "auto", widths will be calculated automatically based on the largest value. | `"auto"` | | `spacing` | int | Number of spaces between columns. | `3` | | `aligns` | iterable | Columns alignments in order. `"l"` (left), `"r"` (right) or `"c"` (center). | `None` | | **RETURNS** | unicode | The formatted row. | | ### class `TracebackPrinter` Helper to output custom formatted tracebacks and error messages. Currently used in [Thinc](https://github.com/explosion/thinc). #### method `TracebackPrinter.__init__` Initialize a traceback printer. ```python from wasabi import TracebackPrinter tb = TracebackPrinter(tb_base="thinc", tb_exclude=("check.py",)) ``` | Argument | Type | Description | Default | | ----------------- | ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ---------- | | `color_error` | unicode / int | Color name or code for errors (passed to `color` helper). | `"red"` | | `color_tb` | unicode / int | Color name or code for traceback headline (passed to `color` helper). | `"blue"` | | `color_highlight` | unicode / int | Color name or code for highlighted text (passed to `color` helper). | `"yellow"` | | `indent` | int | Number of spaces to use for indentation. | `2` | | `tb_base` | unicode | Name of directory to use to show relative paths. For example, `"thinc"` will look for the last occurence of `"/thinc/"` in a path and only show path to the right of it. | `None` | | `tb_exclude` | tuple | List of filenames to exclude from traceback. | `tuple()` | | **RETURNS** | `TracebackPrinter` | The traceback printer. | | #### method `TracebackPrinter.__call__` Output custom formatted tracebacks and errors. ```python from wasabi import TracebackPrinter import traceback tb = TracebackPrinter(tb_base="thinc", tb_exclude=("check.py",)) error = tb("Some error", "Error description", highlight="kwargs", tb=traceback.extract_stack()) raise ValueError(error) ``` ``` Some error Some error description Traceback: β”œβ”€ [61] in .env/lib/python3.6/site-packages/pluggy/manager.py β”œβ”€β”€β”€ _multicall [187] in .env/lib/python3.6/site-packages/pluggy/callers.py └───── pytest_fixture_setup [969] in .env/lib/python3.6/site-packages/_pytest/fixtures.py >>> result = call_fixture_func(fixturefunc, request, kwargs) ``` | Argument | Type | Description | Default | | ----------- | -------- | ------------------------------------------------------------------------------------------ | ------- | | `title` | unicode | The message title. | | | `*texts` | unicode | Optional texts to print (one per line). | | | `highlight` | unicode | Optional sequence to highlight in the traceback, e.g. the bad value that caused the error. | `False` | | `tb` | iterable | The traceback, e.g. generated by `traceback.extract_stack()`. | `None` | | **RETURNS** | unicode | The formatted traceback. Can be printed or raised by custom exception. | | ### Utilities #### function `color` ```python from wasabi import color formatted = color("This is a text", fg="white", bg="green", bold=True) ``` | Argument | Type | Description | Default | | ----------- | ------------- | --------------------------------------------- | ------- | | `text` | unicode | The text to be formatted. | - | | `fg` | unicode / int | Foreground color. String name or `0` - `256`. | `None` | | `bg` | unicode / int | Background color. String name or `0` - `256`. | `None` | | `bold` | bool | Format the text in bold. | `False` | | **RETURNS** | unicode | The formatted string. | | #### function `wrap` ```python from wasabi import wrap wrapped = wrap("Hello world, this is a text.", indent=2) ``` | Argument | Type | Description | Default | | ----------- | ------- | ------------------------------------------ | ------- | | `text` | unicode | The text to wrap. | - | | `wrap_max` | int | Maximum line width, including indentation. | `80` | | `indent` | int | Number of spaces used for indentation. | `4` | | **RETURNS** | unicode | The wrapped text with line breaks. | | #### function `diff_strings` ```python from wasabi import diff_strings diff = diff_strings("hello world!", "helloo world") ``` | Argument | Type | Description | Default | | ----------- | ------------- | ---------------------------------------------------------------------------- | ------------------ | | `a` | unicode | The first string to diff. | | `b` | unicode | The second string to diff. | | `fg` | unicode / int | Foreground color. String name or `0` - `256`. | `"black"` | | `bg` | tuple | Background colors as `(insert, delete)` tuple of string name or `0` - `256`. | `("green", "red")` | | **RETURNS** | unicode | The formatted diff. | | ### Environment variables Wasabi also respects the following environment variables. The prefix can be customised on the `Printer` via the `env_prefix` argument. For example, setting `env_prefix="SPACY"` will expect the environment variable `SPACY_LOG_FRIENDLY`. | Name | Description | | ---------------------- | ------------------------------------------------------ | | `ANSI_COLORS_DISABLED` | Disable colors. | | `WASABI_LOG_FRIENDLY` | Make output nicer for logs (no colors, no animations). | | `WASABI_NO_PRETTY` | Disable pretty printing, e.g. colors and icons. | ## πŸ”” Run tests Fork or clone the repo, make sure you have `pytest` installed and then run it on the package directory. The tests are located in [`/wasabi/tests`](/wasabi/tests). ```bash pip install pytest cd wasabi python -m pytest wasabi ```