target, method, level, limit, tolerance)4426raiseValueError("cannot handle a non-unique multi-index!")4427elifnotself.is_unique:4428# GH#42568->4429raiseValueError("cannot reindex on an axis with duplicate labels")4430else:4431indexer, _ = self.get_indexer_non_unique(target) ...
in Flags.allows_duplicate_labels(self, value) 94 if not value: 95 for ax in obj.axes: ---> 96 ax._maybe_check_unique() 98 self._allows_duplicate_labels = value File ~/work/pandas/pandas/pandas/core/indexes/base.py:715, in Index._maybe_check_unique(...
In the chapters to come, we will delve(钻研) more deeply into data analysis and manipulation topics using pandas. This book is not inteded to serve as exhausitive(详尽的) documentation for the pandas library; instead, we'll focus on the most important features, leaving the less common(i....
series2:pd.Series):pd.testing.assert_series_equal(create_name_len_col(series1),series2,check_dt...
tm.assert_frame_equal(result, expected) # ValueError: The 'delim_whitespace' option is not supported with the 'pyarrow' engine # ValueError: the 'pyarrow' engine does not support regex separators @xfail_pyarrow def test_header_delim_whitespace(all_parsers): # GH#54918 @@ -704,12 +704,7...
object 11. how to bin a numeric series to 10 groups of equal size? difficulty level: l2 bin the series ser into 10 equal deciles and replace the values with the bin name. input ser = pd.series(np.random.random(20)) desired output # first 5 items 0 7th 1 9th 2 7th 3 3rd 4 ...
The sample DataFrame does not have any missing values. Let's introduce a few to make things interesting. The .copy() method makes a copy of the original DataFrame. This is done to ensure that any changes to the copy don’t reflect in the original DataFrame. Using .loc (to be discussed...
This has caused the sample method to randomly select 3 rows. That’s what thenparameter does … it specifies the number of elements in the output. Notice also that if you re-run this code, you’ll get the same 3 rows. That’s because we’re usingrandom_stateto make the code reproduci...
Notes --- The behavior of ``indent=0`` varies from the stdlib, which does not indent the output but does insert newlines. Currently, ``indent=0`` and the default ``indent=None`` are equivalent in pandas, though this may change in a future release. ``orient='table'`` contains a ...
The string representation(代表) of a Series displaye interactively(交互地) show the index on the left and the value on the right.(索引显示在左边, 值在右边) Since we did not specify(指定) an index for the data, a default one consisting of the integer 0 throught N-1(where N is the ...