pandas.set_eng_float_format#

pandas.set_eng_float_format(accuracy=3, use_eng_prefix=False)[source]#

Format float representation in DataFrame with SI notation.

Sets the floating-point display format for DataFrame objects using engineering notation (SI units), allowing easier readability of values across wide ranges.

Parameters:

accuracyint, default 3: Number of decimal digits after the floating point.
use_eng_prefixbool, default False: Whether to represent a value with SI prefixes.

Returns:

None: This method does not return a value. it updates the global display format for floats in DataFrames.

See also

set_option: Set the value of the specified option or options.
reset_option: Reset one or more options to their default value.

Examples

>>> df = pd.DataFrame([1e-9, 1e-3, 1, 1e3, 1e6])
>>> df
              0
0  1.000000e-09
1  1.000000e-03
2  1.000000e+00
3  1.000000e+03
4  1.000000e+06

>>> pd.set_eng_float_format(accuracy=1)
>>> df
         0
0  1.0E-09
1  1.0E-03
2  1.0E+00
3  1.0E+03
4  1.0E+06

>>> pd.set_eng_float_format(use_eng_prefix=True)
>>> df
        0
0  1.000n
1  1.000m
2   1.000
3  1.000k
4  1.000M

>>> pd.set_eng_float_format(accuracy=1, use_eng_prefix=True)
>>> df
      0
0  1.0n
1  1.0m
2   1.0
3  1.0k
4  1.0M

>>> pd.set_option("display.float_format", None)  # unset option