def is_only_remaining_pair(df):
""" Here we check for any pair of cat:val-s that are the only non rejected
combination. If we find any such pair, we update our df
"""
df2 = df.copy()
for col in common.category_columns(df2):
othercols = [c for c in common.category_columns(df2) if c != col]
for (colval, g) in df2[common.is_possible(df2)].groupby(col):
for othercol in othercols:
oval0 = g[othercol].iloc[0]
if (g[othercol] == oval0).all():
# there is only one value of othercal for col
df2 = is_same(
common.catval_filter(col, colval),
common.catval_filter(othercol, oval0),
df2
)
return df2
def poss(self):
return self.df[common.is_possible(self.df)]