PYTHON

filter dataframe

tests_df[(tests_df['grade'] > 10)]

pandas filter dataframe

In [96]: df
Out[96]:
   A  B  C  D
a  1  4  9  1
b  4  5  0  2
c  5  5  1  0
d  1  3  9  6

In [99]: df[(df.A == 1) & (df.D == 6)]
Out[99]:
   A  B  C  D
d  1  3  9  6

filter pandas dataframe

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# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)

pandas dataframe filter

df = pd.DataFrame(np.array(([1, 2, 3], [4, 5, 6])),
...                   index=['mouse', 'rabbit'],
...                   columns=['one', 'two', 'three'])
>>> df
        one  two  three
mouse     1    2      3
rabbit    4    5      6

# select columns by name
df.filter(items=['one', 'three'])
         one  three
mouse     1      3
rabbit    4      6

# select columns by regular expression
df.filter(regex='e$', axis=1)
         one  three
mouse     1      3
rabbit    4      6

# select rows containing 'bbi'
df.filter(like='bbi', axis=0)
         one  two  three
rabbit    4    5      6

pandas column filter

filter = df['column']!= 0
df = df[filter]

Filter in pandas

#Filtering for SP state and price up or equal 115
sp_above_mean = df[(df['price'] >= 115) & (df['seller_state'] == 'SP')]

pandas filter

# select columns by name
>>> df.filter(items=['one', 'three'])
         one  three
mouse     1      3
rabbit    4      6

filter pandas dataframe

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# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)

pandas filter

df[(df['year'] > 2012) & (df['reports'] < 30)]

filter pandas dataframe

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# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)

filter pandas dataframe

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4
# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)

filter pandas dataframe

1
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3
4
# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)

pandas filter

>continents = ['Asia','Africa', 'Americas', 'Europe']
>gapminder_Ocean = gapminder[~gapminder.continent.isin(continents)]
>gapminder_Ocean.shape 
(24,6)

filter pandas dataframe

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# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)

pandas filter

#To select rows whose column value is in list 
years = [1952, 2007]
gapminder.year.isin(years)

filter pandas dataframe

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3
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# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)

filter pandas dataframe

1
2
3
4
# filter rows for year 2002 using  the boolean expression
>gapminder_2002 = gapminder[gapminder['year']==2002]
>print(gapminder_2002.shape)
(142, 6)