I already referred SO post https://stackoverflow.com/questions/25822604/pandas-concat-valueerror-buffer-dtype-mismatch-expected-python-object-but-go but still it ...
df=pd.read_excel(xl_file, sheet_name=xl_sheet,header=[18,19], usecols='B,D:J,L') pandas: 0.24.1 pytest: 3.3.2 pip: 19.0.3 setuptools: 40.8.0 Cython: 0.27.3 numpy: 1. ...