我有一个混合数据类型列表，如下所示：list = [['3D prototypes',

'Can print large objects',

'Autodesk Maya/Mudbox',

'3D Studio'],

['We can produce ultra high resolution 3D prints in multiple materials.',

'The quality of our prints beats MakerBot, Form 1, or any other either

powder based or printers using PLA, ABS, Wax or Resin. This printer has

the highest resolution and a very large build size. It prints fully

functional moving parts like a chain or an engine right out of the

printer.',

'The printer is loaded with DurusWhite.',

'Inquire to change the material. There is a $30 surcharge for material

switch.',

"Also please mention your creation's dimensions in mm and if you need

expedite delivery.",

"Printer's Net build size:",

'294 x 192 x 148.6 mm (11.57 x 7.55 x 5.85 in.)',

'The Objet30 features four Rigid Opaque materials and one material that

mimics polypropylene. The Vero family of materials all feature dimensional

stability and high-detail visualization, and are designed to simulate

plastics that closely resemble the end product.',

'PolyJet based printers have a different way of working. These

technologies deliver the highest quality and precision unmatched by the

competition. These type of printers are ideal for professionals, for uses

ranging from casting jewelry to device prototyping.',

'Rigid opaque white (VeroWhitePlus)',

'Rigid opaque black (VeroBlackPlus )',

'Rigid opaque blue (VeroBlue)',

'Rigid opaque gray (VeroGray)',

'Polypropylene-like material (DurusWhite) for snap fit applications'],

'Hub can print invoices',

'postal service',

'Mar 2015',

'Within the hour i',

[u'40.7134', u'-74.0069'],

'4',

['Customer JAMES reviewed Sun, 2015-04-19 05:17: Awesome print!

Good quality, relatively fast shipping, and very responsive to my

questions; would certainly recommend this hub. ',

'Hub XSENIO replied 2 days 16 hours ago: Thanks James! ',

'Customer Sara reviewed Sun, 2015-04-19 00:10: Thank you for going

out of your way to get this to us in time for our shoot. ',

'Hub XSENIO replied 2 days 16 hours ago: Thanks ! ',

'Customer Aaron reviewed Sat, 2015-04-18 02:36: Great service ',

'Hub XSENIO replied 2 days 16 hours ago: Thanks! ',

"Customer Arnoldas reviewed Mon, 2015-03-23 19:47: Xsenio's Hub was

able to produce an excellent quality print , was quick and reliable.

Awesome printing experience! "]]

它的混合数据类型如下所示

^{pr2}$

但当我使用pd.DataFrame(list)

它表明TypeError: Expected list, got str

谁能告诉我这有什么问题吗？是否必须将列表中的所有项从字符串转换为列表？在

谢谢