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how to fill nan values with mean in pandas

df.fillna(df.mean())
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pandas fill nan methods

# axis=1 means fillna by rows
df = df.fillna(axis=1, method='backfill')
df = df.fillna(axis=1, method='ffill')

# methods
# pad / ffill: propagate last valid observation forward to next valid.
# backfill / bfill: use next valid observation to fill gap.
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how to fill nan values in pandas

For one column using pandas:
df['DataFrame Column'] = df['DataFrame Column'].fillna(0)
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dataframe fill nan with mode

df['Column_Name'].fillna(df['Column_Name'].mode()[0], inplace=True)
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