@classmethod<EOL><INDENT>def from_file(cls, filename, name='<STR_LIT>'):<DEDENT>
df = pd.read_csv(filename, header=<NUM_LIT:0>, delim_whitespace=True, index_col=[<NUM_LIT:0>, <NUM_LIT:1>])['<STR_LIT:M>']<EOL>df.name = name<EOL>return cls(df=df, name=name)<EOL>
Imports a mass table from a file