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fbdb46f5cb
Reviewed By: chadaustin Differential Revision: D17872966 fbshipit-source-id: cd60a364a2146f0dadbeca693b1d4a5d7c97ff63
53 lines
1.7 KiB
Python
53 lines
1.7 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2.
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from typing import Dict, List, Optional
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def tabulate(
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headers: List[str],
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rows: List[Dict[str, str]],
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header_labels: Optional[Dict[str, str]] = None,
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) -> str:
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""" Tabulate some data so that it renders reasonably.
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rows - is a list of data that is to be rendered
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headers - is a list of the dictionary keys of the row data to
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be rendered and specifies the order of the fields.
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header_labels - an optional mapping from dictionary key to a
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more human friendly label for that key.
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A missing mapping is defaulted to the uppercased
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version of the key
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Returns a string holding the tabulated result
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"""
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col_widths = {}
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def label(name) -> str:
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label = (header_labels or {}).get(name, "")
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if label:
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return label
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return str(name.upper())
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def field(obj, name) -> str:
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return str(obj.get(name, ""))
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for name in headers:
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col_widths[name] = len(label(name))
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for row in rows:
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for name in headers:
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col_widths[name] = max(len(field(row, name)), col_widths[name])
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format_string = ""
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for col_width in col_widths.values():
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if format_string:
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format_string += " "
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format_string += "{:<%d}" % col_width
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output = format_string.format(*[label(name) for name in headers])
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for row in rows:
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output += "\n"
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output += format_string.format(*[field(row, name) for name in headers])
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return output
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