Q:
在centos，python2.7安装pandas的时候，一直提醒未找到version>=1.9.0的numpy，其实已经安装了1.14.0的numpy。报错如下：
A:
用命令：pip uninstall numpy；pip install --upgrade setuptools；pip install --user numpy scipy matplotlib jupyter pandas ；卸载了原来的numpy；更新了一下setuptools依赖；再重新安装就好了。其实最后一条命令安装太多了，可以根据需要视情况删掉某几个。最后安装好的numpy版本是1.11.0。
Q:
描述：用pandas的read_csv读取csv格式的文件时，根本不能读。
报错：
Traceback (most recent call last):
File "E:/iiii/ML/transfor.py", line 100, in <module>
news=pd.read_csv("passall-.csv")
File "D:\Python27\lib\site-packages\pandas\io\parsers.py", line 709, in parser_f
return _read(filepath_or_buffer, kwds)
File "D:\Python27\lib\site-packages\pandas\io\parsers.py", line 455, in _read
data = parser.read(nrows)
File "D:\Python27\lib\site-packages\pandas\io\parsers.py", line 1069, in read
ret = self._engine.read(nrows)
File "D:\Python27\lib\site-packages\pandas\io\parsers.py", line 1839, in read
data = self._reader.read(nrows)
File "pandas\_libs\parsers.pyx", line 902, in pandas._libs.parsers.TextReader.read
File "pandas\_libs\parsers.pyx", line 924, in pandas._libs.parsers.TextReader._read_low_memory
File "pandas\_libs\parsers.pyx", line 978, in pandas._libs.parsers.TextReader._read_rows
File "pandas\_libs\parsers.pyx", line 965, in pandas._libs.parsers.TextReader._tokenize_rows
File "pandas\_libs\parsers.pyx", line 2208, in pandas._libs.parsers.raise_parser_error
pandas.errors.ParserError: Error tokenizing data. C error: Expected 10 fields in line 6, saw 11
A:
出现这种报错的情况有很多，我遇到的情况的解决方式是将文件的编码格式改为UTF8无BOM格式即可。不要用UltraEdit...