pd.set_option('display.max_colwidth', 100)

In [209]: pd.options.display.
            pd.o…y.chop_threshold         pd.o…y.date_yearfirst         pd.options.display.html       pd.o…y.max_columns            pd.options.display.max_rows   pd.o…y.notebook_repr_html     pd.options.display.unicode
            pd.o…y.colheader_justify      pd.options.display.encoding   pd.options.display.large_repr pd.o…y.max_colwidth           pd.o…y.max_seq_items          pd.o…y.pprint_nest_depth      pd.options.display.width
            pd.o…y.column_space           pd.o…y.expand_frame_repr      pd.options.display.latex      pd.o…y.max_info_columns       pd.o…y.memory_usage           pd.options.display.precision
            pd.o…y.date_dayfirst          pd.o…y.float_format           pd.o…y.max_categories         pd.o…y.max_info_rows          pd.o…y.multi_sparse           pd.o…y.show_dimensions