mirror of https://github.com/tqdm/tqdm.git
69 lines
1.2 KiB
Python
69 lines
1.2 KiB
Python
"""
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Inserting `tqdm` as a "pipe" in a chain of coroutines.
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Not to be confused with `asyncio.coroutine`.
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"""
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from functools import wraps
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from tqdm.auto import tqdm
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def autonext(func):
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@wraps(func)
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def inner(*args, **kwargs):
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res = func(*args, **kwargs)
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next(res)
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return res
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return inner
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@autonext
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def tqdm_pipe(target, **tqdm_kwargs):
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"""
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Coroutine chain pipe `send()`ing to `target`.
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This:
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>>> r = receiver()
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>>> p = producer(r)
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>>> next(r)
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>>> next(p)
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Becomes:
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>>> r = receiver()
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>>> t = tqdm.pipe(r)
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>>> p = producer(t)
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>>> next(r)
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>>> next(p)
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"""
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with tqdm(**tqdm_kwargs) as pbar:
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while True:
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obj = (yield)
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target.send(obj)
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pbar.update()
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def source(target):
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for i in ["foo", "bar", "baz", "pythonista", "python", "py"]:
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target.send(i)
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target.close()
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@autonext
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def grep(pattern, target):
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while True:
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line = (yield)
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if pattern in line:
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target.send(line)
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@autonext
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def sink():
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while True:
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line = (yield)
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tqdm.write(line)
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if __name__ == "__main__":
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source(
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tqdm_pipe(
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grep('python',
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sink())))
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