關於pandas多級表頭,輸出Excel文件空白行問題

找到pandas源碼文件
excel.py
函數起始大概在源碼551行,
貼上源碼 函數_format_regular_rows

    def _format_regular_rows(self):
        has_aliases = isinstance(self.header, (tuple, list, np.ndarray, Index))
        if has_aliases or self.header:
            self.rowcounter += 1

        # output index and index_label?
        if self.index:
            # check aliases
            # if list only take first as this is not a MultiIndex
            if self.index_label and isinstance(
                self.index_label, (list, tuple, np.ndarray, Index)
            ):
                index_label = self.index_label[0]
            # if string good to go
            elif self.index_label and isinstance(self.index_label, str):
                index_label = self.index_label
            else:
                index_label = self.df.index.names[0]

            if isinstance(self.columns, ABCMultiIndex):
                self.rowcounter += 1

            if index_label and self.header is not False:
                yield ExcelCell(self.rowcounter - 1, 0, index_label, self.header_style)

            # write index_values
            index_values = self.df.index
            if isinstance(self.df.index, ABCPeriodIndex):
                index_values = self.df.index.to_timestamp()

            for idx, idxval in enumerate(index_values):
                yield ExcelCell(self.rowcounter + idx, 0, idxval, self.header_style)

            coloffset = 1
        else:
            coloffset = 0

        for cell in self._generate_body(coloffset):
            yield cell

註釋掉這段代碼即可

#if isinstance(self.columns, ABCMultiIndex):
#	self.rowcounter += 1

其實在註釋上已經解釋了爲什麼會多一行空白,大概在 606行

# MultiIndex columns require an extra row
# with index names (blank if None) for
# unambiguous round-trip, unless not merging,
# in which case the names all go on one row Issue #11328
意思是多級表頭 會多出一行 DEBUG 看到 控制參數爲 self.rowcounter

至此問題已經解決.暫不清楚是否會有其他影響,希望下個版本能修復這個問題吧