print([x["keywords"].split(",") for i,x in df.iterrows() if not isinstance(x["keywords"], (int, float))])
print([x["tags"].split(",") for i,x in df.iterrows() if not isinstance(x["tags"], (int, float))])
print([x["rating"].split(",") for i,x in df.iterrows() if not isinstance(x["rating"], (int, float))])
print([x["rank"].split(",") for i,x in df.iterrows() if not isinstance(x["rank"], (int, float))])
I want to join these four statements in a single statement when i concatenate them it gives me error:
AttributeError: 'float' object has no attribute 'split'
features = [(x["entity_id"], x["tags"].split(","),x["rating"],
x["rank"],x["keywords"].split(",") )
for (index, x) in df.iterrows() if not isinstance(x, (int, float))]
pd.DataFrame.iterrows
returns tuples of index and pd.Series
objects. Hence isinstance(x, (int, float))
isn't doing what you want it to, as a pd.Series
object isn't a subclass of int
or float
. With this method you would need to iterate individual values contained within the pd.Series
object.
This is possible, but I strongly advise against it. In fact, I advise you avoid iterrows
altogether, as this loses all vectorised functionality, which is one of the main benefits of Pandas.
Here is a solution using pd.DataFrame.mask
and NumPy arrays:
df = pd.DataFrame({'entity_id': ['SomeId', 3124123, 'SomeOtherId', 314324],
'tags': ['Tag1,Tag2', None, 'Tag4', 'Tag5,Tag6,Tag7'],
'rating': [5.0, 'SomeRating', 'SomeOtherRating', np.nan],
'rank': ['SomeRank', 2, np.nan, 4],
'keywords': ['key1', 'key2,key3', 'key4', 'key5']})
df2 = df.mask(df.apply(pd.to_numeric, errors='coerce').notnull() | df.isnull(), None)
for col in ['tags', 'keywords']:
df2[col] = df2[col].str.split(',')
col_order = ['entity_id', 'tags', 'rating', 'rank', 'keywords']
res = [list(filter(None, x)) for x in df2[col_order].values.tolist()]
Result
print(res)
[['SomeId', ['Tag1', 'Tag2'], 'SomeRank', ['key1']],
['SomeRating', ['key2', 'key3']],
['SomeOtherId', ['Tag4'], 'SomeOtherRating', ['key4']],
[['Tag5', 'Tag6', 'Tag7'], ['key5']]]
As a comment, this is pretty messy. It's good practice to decide on a consistent structure rather than this kind of mixed data type structure and filtering based on type.
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