code: def _replace_coerce(self, to_replace, value, inplace=True, regex=False,
                          convert=False, mask=None):
          
  
          if mask.any():
              if not regex:
                  self = self.coerce_to_target_dtype(value)
                  return self.putmask(mask, value, inplace=inplace)
              else:
                  return self._replace_single(to_replace, value, inplace=inplace,
                                              regex=regex,
                                              convert=convert,
                                              mask=mask)
          return self
docs: Replace value corresponding to the given boolean array with another
          value.
  
          Parameters
          ----------
          to_replace : object or pattern
              Scalar to replace or regular expression to match.
          value : object
              Replacement object.
          inplace : bool, default False
              Perform inplace modification.
          regex : bool, default False
              If true, perform regular expression substitution.
          convert : bool, default True
              If true, try to coerce any object types to better types.
          mask : array-like of bool, optional
              True indicate corresponding element is ignored.
  
          Returns
          -------
          A new block if there is anything to replace or the original block.