具体报错信息：
Traceback (most recent call last):File "<stdin>", line 1, in <module>File "/home/dengfei/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 676, in parser_freturn _read(filepath_or_buffer, kwds)File "/home/dengfei/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 448, in _readparser = TextFileReader(fp_or_buf, **kwds)File "/home/dengfei/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 880, in __init__self._make_engine(self.engine)File "/home/dengfei/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 1114, in _make_engineself._engine = CParserWrapper(self.f, **self.options)File "/home/dengfei/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 1868, in __init__ParserBase.__init__(self, kwds)File "/home/dengfei/anaconda3/lib/python3.7/site-packages/pandas/io/parsers.py", line 1416, in __init__"Passing negative integer to header is invalid. "ValueError: Passing negative integer to header is invalid. For no header, use header=None instead
报错命令：
pd.read_csv("a.txt",header=-1,sep="\s+")
报错原因：
pandas升级了，不支持"header=-1"这种写法了，改为了：“header=None”
解决方法：
pd.read_csv("a.txt",header=None,sep="\s+")
