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POHow do I pass an arbitrary number of arguments to a function in Python (Facepy library)?
 

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  1. POHow do I pass an arbitrary number of arguments to a function in Python (Facepy library)?
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    <p>I'm trying to pass an arbitrary number of arguments to a function, and I keep getting errors, and not quite sure where I'm going wrong. This is the first time I've attempted to use **kwargs.</p> <p>More specifically, I'm trying to use the Facepy library to get data from Facebook's Graph API. According to the documentation (<a href="https://facepy.readthedocs.org/en/latest/usage/graph-api.html" rel="nofollow">https://facepy.readthedocs.org/en/latest/usage/graph-api.html</a>), the <code>get</code> method should accept optional parameters like "since", "until", etc. Since I only want to pass some of these parameters on any given query, this seems like an ideal time to use **kwargs.</p> <p>First I create a function that wraps the Facepy library:</p> <pre><code>def graph_retriever(object_id, metric_url, **kwargs): #optional args that I want to pass include since, until, and summary graph = facepy.GraphAPI(access_token) retries = 3 # An integer describing how many times the request may be retried. object_data = graph.get('%s/%s' % (object_id, metric_url), False, retries, **kwargs) return object_data </code></pre> <p>Here's two examples where I call the function with different arguments:</p> <pre><code>for since, until in day_segmenter(start, end): # loop through the date range raw_post_data = graph_retriever(str(page), 'posts', {'since': since, 'until': until}) </code></pre> <p><code>post_dict['comment_count'] = graph_retriever(post_id, 'comments', {'summary':1})['summary']['total_count']</code></p> <p>However, when I try to run this, I get the following error:</p> <p><code>Traceback (most recent call last): raw_post_data = graph_retriever(str(page), 'posts', {'since': since, 'until': until}) TypeError: graph_retriever() takes exactly 2 arguments (3 given)</code></p> <p>What am I doing wrong?</p>
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    1. USJeff Widman
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