pandas round values in dataframe to given decimal places code example

Example 1: pandas decimal places

# (1) Round to specific decimal places – Single DataFrame column
df['DataFrame column'].round(decimals=number of decimal places needed)

# (2) Round up – Single DataFrame column
df['DataFrame column'].apply(np.ceil)

# (3) Round down – Single DataFrame column
df['DataFrame column'].apply(np.floor)

# (4) Round to specific decimals places – Entire DataFrame
df.round(decimals=number of decimal places needed)

Example 2: pandas groupby mean round

data.mean().round(0)  # Rounds mean to nearest integer, e.g. 1.95 = 2 and 1.05 = 1