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        "description": "pypager\n=======\n\n*A $PAGER in pure Python*\n\n::\n\n    pip install pypager\n\nPypager can be used as a stand-alone application, or as a library.\n\n\nWhat is a pager?\n----------------\n\nA pager is a terminal program that can be used to view the content of a file,\nor the output stream from another application.\n\nFor instance, when we run ``man vim``, the actual content is displayed in a\npager, according to the ``$PAGER`` environment variable.\n\nImportant for a pager is that the input can be streamed. For instance when we\nexecute ``find / | pypager``; we don't want to wait for the whole file system\nto be traversed, before displaying anything. Data is only read from the input\npipe, when it needs to be displayed.\n\nPopular pager applications are ``more``, ``less`` and ``most``.\n\n\nFeatures\n--------\n\n- Highlighting of text [0].\n- Searching.\n- Many key bindings from ``less`` are implemented.\n\n[0] (It understands the output of man pages, ANSI escape codes and further, it\ncan use Pygments to highlight about any file.)\n\n\nUsage\n-----\n\n.. code:: sh\n\n    # Install it.\n    pip install pypager\n\n    # Tell the environment to use this pager. Put the following line in\n    # ~/.bashrc if you like.\n    export PAGER=pypager\n\n    # Following commands, and many others should pick up the pager.\n    man vim\n    git diff\n\n    # View a file, using this pager.\n    pypager some_source_code.py\n\n\nAs a library\n------------\n\n.. code:: python\n\n    from pypager.source import GeneratorSource\n    from pypager.pager import Pager\n    from prompt_toolkit.token import Token\n\n\n    def generate_a_lot_of_content():\n        \"\"\"\n        This is a function that generates content on the fly.\n        It's called when the pager needs to display more content.\n        \"\"\"\n        counter = 0\n        while True:\n            yield [(Token, 'line: %i\\n' % counter)]\n            counter += 1\n\n\n    if __name__ == '__main__':\n        source = GeneratorSource(generate_a_lot_of_content())\n        p = Pager(source)\n        p.run()\n\n",
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