python将两列内容合并_在pandas/python中,将两列合并为同一数据帧中的一列

我有一个问题,要在同一个数据帧(start_end)中将两列合并为一列,还要删除空值。我打算将“起始站”和“结束站”合并为“站”,并根据新列“站”保留“持续时间”。我试过pd.merge,pd.concat,pd.append,但是我没办法解决。

起始端数据帧:Duration End station Start station

14 1407 NaN 14th & V St NW

19 509 NaN 21st & I St NW

20 638 15th & P St NW. NaN

27 1532 NaN Massachusetts Ave & Dupont Circle NW

28 759 NaN Adams Mill & Columbia Rd NW

预期产量:Duration stations

14 1407 14th & V St NW

19 509 21st & I St NW

20 638 15th & P St NW

27 1532 Massachusetts Ave & Dupont Circle NW

28 759 Adams Mill & Columbia Rd NW

我目前掌握的代码:#start_end is the dataframe, 'start station', 'end station', 'duration'

start_end = pd.concat([df_start, df_end])

这就是我试图:station = pd.merge([start_end['Start station'],start_end['End station']])

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