@classmethod<EOL><INDENT>def read_tsv(cls, file_or_buffer: str):<DEDENT>
df = pd.read_csv(file_or_buffer, sep='<STR_LIT:\t>', index_col=<NUM_LIT:0>)<EOL>df = df.where(pd.notnull(df), None)<EOL>return cls(df)<EOL>
Read genes from tab-delimited text file.