python check if is pandas dataframe
import pandas as pd isinstance(df, pd.DataFrame)
python check if is pandas dataframe
import pandas as pd isinstance(df, pd.DataFrame)
pandas lambda if else
df['equal_or_lower_than_4?'] = df['set_of_numbers'].apply(lambda x: 'True' if x <= 4 else 'False')
make a condition statement on column pandas
df['color'] = ['red' if x == 'Z' else 'green' for x in df['Set']]
pandas if python
import pandas as pd names = {'First_name': ['Jon','Bill','Maria','Emma']} df = pd.DataFrame(names,columns=['First_name']) df.loc[(df['First_name'] == 'Bill') | (df['First_name'] == 'Emma'), 'name_match'] = 'Match' df.loc[(df['First_name'] != 'Bill') & (df['First_name'] != 'Emma'), 'name_match'] = 'Mismatch' print (df)
if condition dataframe python
df.loc[df['age1'] - df['age2'] > 0, 'diff'] = df['age1'] - df['age2']
pandas if python
import pandas as pd names = {'First_name': ['Jon','Bill','Maria','Emma']} df = pd.DataFrame(names,columns=['First_name']) df.loc[df['First_name'] == 'Bill', 'name_match'] = 'Match' df.loc[df['First_name'] != 'Bill', 'name_match'] = 'Mismatch' print (df)
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