Answers for "where condition in pandas dataframe"

5

make a condition statement on column pandas

df['color'] = ['red' if x == 'Z' else 'green' for x in df['Set']]
Posted by: Guest on May-12-2020
6

or condition in pandas

df1 = df[(df.a != -1) & (df.b != -1)]
Posted by: Guest on June-03-2020
4

or condition in pandas

df2 = df[(df.a != -1) | (df.b != -1)]
Posted by: Guest on June-03-2020
3

new dataframe based on certain row conditions

# Create variable with TRUE if nationality is USA
american = df['nationality'] == "USA"

# Create variable with TRUE if age is greater than 50
elderly = df['age'] > 50

# Select all cases where nationality is USA and age is greater than 50
df[american & elderly]
Posted by: Guest on March-02-2020
2

make a condition statement on column pandas

df.loc[df['column name'] condition, 'new column name'] = 'value if condition is met'
Posted by: Guest on May-10-2020

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