Source code for pyarrow.formatting

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

# Pretty-printing and other formatting utilities for Arrow data structures

import pyarrow.scalar as scalar

[docs]def array_format(arr, window=None): values = [] if window is None or window * 2 >= len(arr): for x in arr: values.append(value_format(x, 0)) contents = _indent(',\n'.join(values), 2) else: for i in range(window): values.append(value_format(arr[i], 0) + ',') values.append('...') for i in range(len(arr) - window, len(arr)): formatted = value_format(arr[i], 0) if i < len(arr) - 1: formatted += ',' values.append(formatted) contents = _indent('\n'.join(values), 2) return '[\n{0}\n]'.format(contents)
[docs]def value_format(x, indent_level=0): if isinstance(x, scalar.ListValue): contents = ',\n'.join(value_format(item) for item in x) return '[{0}]'.format(_indent(contents, 1).strip()) else: return repr(x)
def _indent(text, spaces): if spaces == 0: return text block = ' ' * spaces return '\n'.join(block + x for x in text.split('\n'))