Using pd.concat results in index name disappearing when the index is not in the same order for DataFrames being concaten...

pandas.tseries.holiday has built-in only US holiday calendars. Is it possible to add other countries' holiday calendars ...

I try to find way to apply cross join on pandas. Failed to find useful suggestion in pandas document.Like SELECT * FROM ...

ser = pd.Series(np.arange(10, dtype=np.float128))>>> ser.dtypedtype('float128')>>> pd.Index(ser).dtype...

Code Sample, a copy-pastable example if possibleimport pandas as pd, numpy as npdf1 = pd.DataFrame({'c1':np.concatenate(...

Link to the (unanswred) stackoverflow question which contains more details.Problem descriptionThe problem concerns the u...

from io import StringIOcsv = r"""Physical\Flows.Solve,9,1,4,0,0,0,0,0,01,2,3,4,5,6,7,8,9,10""&q...

[1] df = pd.DataFrame([[1,2]])[2] df.iloc[0, 1:] = df.iloc[0, 1:].apply('{:+.2f}'.format)[3] df 0 10 1 [+2.00]...

Code SampleIn [81]: sd_series = pd.Series(range(1000), index=pd.MultiIndex.from_product([range(100), range(10)]))In [82]...

Can anyone else reproduce this? (python 2 only)$ pytest pandas/tests/test_algos.py::TestUnique::test_order_of_appearance...

Having bunch of slice(None) in multilevel indexes (>=3 levels) looks pretty unreadable.Does it make sense to have an ...

Code Sample, a copy-pastable example if possibleIn [2]: s = pd.Series(dtype='object')In [3]: s.loc[0] = 1In [4]: sOut[4]...

Code# Your code herebook = load_workbook(self.template_excel_path, data_only=True, keep_links=True)writer = pandas.Excel...

Problem descriptionI can't seem to find if pandas has a count unique / distinct function. I know I can unique a series /...

df = pd.DataFrame({'a': [-2, -1, 1, 10, 8, 11, -1], 'b': list('abdceff'), 'c': [1.0, 2.0, 4.0, 3.2, np.nan, ...

In [1]: import pandas as pdfrom io import StringIO data = """code\tname\ttyp\tntf\nA5411\tWD\tAF\t\nA5411...

Example 1 and Example 2 are both incorrect for 'GroupBy.apply' functon in document.>>> df = pd.DataFrame({...

Code Sample, a copy-pastable example if possibleimport numpy as npimport pandas as pdtest = [0,1,2,3,4]test_np = np.arra...

Code Samplepandas.DataFrame.duplicated(subset=None, keep='first')Problem descriptionPandas have a built-in method for de...

Code Sample, a copy-pastable example if possibleimport gcimport numpy as npimport pandas as pdfrom memory_profiler impor...