从数据框中删除标头索引

Question

我有一个数据框（df）：

       0       1         2            3                    4     5
0   6894   JONES     STEVE            D  2017-01-03 00:00:00  None
1  13555   SMITH     JENNY            E  2017-04-01 00:00:00  None

我有一个名为new_header的标头，该标头将应用于数据帧，如下所示：

0                     Identifier
1                        Surname
2                  First name(s)
3                 Transferred to
4                  Transfer Date
5                         Status

我将new_header应用于以下内容：

df.columns = new_header

我得到以下输出：

0               Identifier Surname  ...          Transfer Date Status
0                     6894   JONES  ...    2017-01-03 00:00:00   None
1                    13555   SMITH  ...    2017-04-01 00:00:00   None

在df的左上角，您可以看到0。有人可以让我知道如何删除0，以便我的数据框看起来像：

                Identifier Surname  ...          Transfer Date Status
0                     6494   JONES  ...    2017-01-03 00:00:00   None
1                    13595   SMITH  ...    2017-04-01 00:00:00   None

Answer 1

您正在尝试使用pandas.Series对象重命名列。这样做时，Series的名称将转换为结果pandas.Index对象的名称。您可以通过多种方式解决此问题。

为df.columns分配一个没有@anky_91建议的名称的

df.columns = new_header.values

df

   Identifier Surname First name(s) Transferred to        Transfer Date Status
0        6894   JONES         STEVE              D  2017-01-03 00:00:00   None
1       13555   SMITH         JENNY              E  2017-04-01 00:00:00   None

---

将df.columns的系列分配给None

df.columns = new_header.rename(None)

df

   Identifier Surname First name(s) Transferred to        Transfer Date Status
0        6894   JONES         STEVE              D  2017-01-03 00:00:00   None
1       13555   SMITH         JENNY              E  2017-04-01 00:00:00   None

---

在事实之后重命名轴

df.columns = new_header
df.rename_axis(None, 1)

   Identifier Surname First name(s) Transferred to        Transfer Date Status
0        6894   JONES         STEVE              D  2017-01-03 00:00:00   None
1       13555   SMITH         JENNY              E  2017-04-01 00:00:00   None

---

将rename与new_header一起用作重命名映射

这假设new_header的索引与df中被重命名的索引对齐。
另外，我必须变得棘手，并确保它们是同一类型。

df.rename(columns=int).rename(columns=new_header)

   Identifier Surname First name(s) Transferred to        Transfer Date Status
0        6894   JONES         STEVE              D  2017-01-03 00:00:00   None
1       13555   SMITH         JENNY              E  2017-04-01 00:00:00   None

Answer 2

您可以按名称获取或设置索引

public class UploadImage_Fragment extends Fragment implements View.OnClickListener {
    public static final String TAG="###Upload Image###";
    TextView uploadText;
    ImageView uploadImage;
    Button uploadButton;
    App_Functions functions;
    String cmpImage,Base64Image;


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
        View v=inflater.inflate(R.layout.upload_profile_cover_registration,container,false);

        uploadText = v.findViewById(R.id.textViewImageUpload);
        uploadImage = v.findViewById(R.id.uploadImage);
        uploadButton = v.findViewById(R.id.uploadButton);

        uploadButton.setEnabled(false);

        Glide.with(getActivity()).load(R.drawable.cam_icon).into(uploadImage);

        uploadImage.setOnClickListener(this);
        uploadButton.setOnClickListener(this);

        setHasOptionsMenu(true);
        return v;
    }

    @Override
    public void onClick(View view) {
        int clickID=view.getId();
        switch (clickID){
            case R.id.uploadImage:
                Media_Gallery gallery = new Media_Gallery();
                gallery.setTargetFragment(this,101);
                FragmentTransaction fragmentTrasaction=getFragmentManager().beginTransaction();
                fragmentTrasaction.addToBackStack("Chat");
                fragmentTrasaction.replace(R.id.FragmentLoginRegistration,gallery,"Chat");
                fragmentTrasaction.commit();

                break;
            case R.id.uploadButton:
                if (uploadButton.isEnabled()){
                    Log.d(TAG,"Button Is Enable Upload Image Here");
                    uploadButton.setEnabled(false);
                }else {
                    Toast.makeText(getActivity(), "Select Image To Upload", Toast.LENGTH_SHORT).show();
                }
                break;

        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        functions=new App_Functions(getActivity());
        if (requestCode==301 && resultCode== Activity.RESULT_OK){
            Uri uri = data.getData();

            cmpImage = functions.compressImage(uri,true);
            Glide.with(getActivity()).load(cmpImage).apply(RequestOptions.circleCropTransform()).into(uploadImage);
            uploadButton.setEnabled(true);
            Log.d(TAG,"Image "+uri+" Compress Image "+cmpImage);
            Bitmap bitmap = BitmapFactory.decodeFile(cmpImage);
            Base64Image=functions.Convert_To_Base64(bitmap);

        }else if (requestCode == 101 && resultCode == Activity.RESULT_OK){
            ArrayList<String> imagePath = data.getStringArrayListExtra("Profile");
            if (imagePath!=null){
                String image = imagePath.get(0);
                Log.d(TAG,"Image Path "+image);

                uploadText.setText("Hey I am New Test"); // Not working

                uploadImage.setImageDrawable(null);
                uploadImage.invalidate();

                File file = new File(image);
                Uri newPath = Uri.fromFile(file);

                Log.d(TAG,"Check File "+file);
                Log.d(TAG,"Check Uri  "+newPath);
                Log.d(TAG,"Check ImageView  "+uploadImage);

                Glide.with(getActivity()).load(image).into(uploadImage); // Not working
            }
        }
    }




    @Override
    public void onResume() {
        super.onResume();
        uploadImage.setImageDrawable(null);
        uploadImage.invalidate();
    }
}

请参见docs