Python Pandas 7 examples of filters and lambda apply
Python Pandas 7 examples of filters and lambda apply
https://blog.softhints.com/python-pan...
Python pandas dataframes
show all
count values in pandas dataframe
count rows of pandas dataframe
filter pandas dataframe
python apply lambda expression on pandas dataframe
Example
import pandas as pd
foo = [{
'Language': 'Python',
'Percent grow': 56
}, {
'Language': 'Java',
'Percent grow': 34
}, {
'Language': 'C',
'Percent grow': 25
}, {
'Language': 'C++',
'Percent grow': 12
}, {
'Language': 'go',
'Percent grow': 5
}]
df = pd.DataFrame(foo, index=pd.RangeIndex(0, len(foo)))
print(df)
print('--------------')
print(df['Language'])
print('--------------')
print(df['Language'] == 'Java')
print('--------------')
print(df.loc[df['Language'].isin(['Java','C'])])
print('--------------')
mylambda = lambda x: x in ['C', 'C++']
print(df.loc[df['Language'].apply(mylambda)])
print('--------------')
print(df.loc[df['Language'].apply(lambda x: x in ['C', 'C++'] )])
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