学习笔记14—Python error集

1、Can't broadcast input array from shape (3,1) into shape (3,)

 resolution:

   V[k:m,k] = v; v has shape (3,1), but the target is (3,). k:m is a 3 term slice; k is a scalar.

        Try using v.ravel(). Or V[k:m,[k]].

2、result1 = pd.Series(np.squeeze(np.load('results_just_TD_leaveOne.npy')))

     result2 = np.load('results_just_TD_leaveOne.npy')

     a = np.argmin(results1[1:80]) -----> 43

     b = np.argmin(results2[1:80]) -----> 42

3、data 如果是dataframe类型: ffff = ordered_data.loc[:,42]

     data 如果是array类型： ffff = ordered_data[:,:42]

4、for s in range(0,80):
      print('%s' % s) ---->(0,1,2,3,.....,78,79); 此处不包含80

5、import panda as pd时，报错“From request import PandaRequest ImportError: No module named 'request' ”

    解决办法：1) pip install pandas (如果已经安装好了，卸载重新安装)，2) import pandas as pd <参考链接：https://stackoverflow.com/questions/45351534/from-request-import-pandarequest-importerror-no-module-named-request>