Question

我有Json文件，并将其转换为字典，然后从其中提取了一些数据，这些数据是类的名称。

这是我的代码

import pandas as pd
import json
df = pd.read_json("/content/Test1.json")
with open('/content/Test1.json') as handle:
    dictdump = json.loads(handle.read())
for elem in dictdump : 
    print(elem['fullyQualifiedName'])

然后返回这些，它们是类的名称：

android.support.v4.app.Watson
android.support.v4.app.Watson.OnCreateOptionsMenuListener
android.support.v4.app.Watson.OnPrepareOptionsMenuListener
android.support.v4.app.Watson.OnOptionsItemSelectedListener
com.actionbarsherlock.ActionBarSherlock
com.actionbarsherlock.ActionBarSherlock.OnCreatePanelMenuListener
com.actionbarsherlock.ActionBarSherlock.OnCreateOptionsMenuListener
com.actionbarsherlock.ActionBarSherlock.OnMenuItemSelectedListener
com.actionbarsherlock.ActionBarSherlock.OnOptionsItemSelectedListener
com.actionbarsherlock.ActionBarSherlock.OnPreparePanelListener

我想将此数据插入CSV文件。任何解决方案中的每行类名称都请

Answer 1

如果您的数据框是这样的，当您将json读取到df中时：

Show
undefined
End

那你可以做：

    fullyQualifiedName
0   android.support.v4.app.Watson
1   android.support.v4.app.Watson.OnCreateOptionsM...
2   android.support.v4.app.Watson.OnPrepareOptions...
3   android.support.v4.app.Watson.OnOptionsItemSel...
4   com.actionbarsherlock.ActionBarSherlock
5   com.actionbarsherlock.ActionBarSherlock.OnCrea...
6   com.actionbarsherlock.ActionBarSherlock.OnCrea...
7   com.actionbarsherlock.ActionBarSherlock.OnMenu...
8   com.actionbarsherlock.ActionBarSherlock.OnOpti...
9   com.actionbarsherlock.ActionBarSherlock.OnPrep...

结果（csv文件的内容）：

df.to_csv("test.csv",columns=["fullyQualifiedName"], index=False,header=False)

设置

android.support.v4.app.Watson
android.support.v4.app.Watson.OnCreateOptionsMenuListener
android.support.v4.app.Watson.OnPrepareOptionsMenuListener
android.support.v4.app.Watson.OnOptionsItemSelectedListener
com.actionbarsherlock.ActionBarSherlock
com.actionbarsherlock.ActionBarSherlock.OnCreatePanelMenuListener
com.actionbarsherlock.ActionBarSherlock.OnCreateOptionsMenuListener
com.actionbarsherlock.ActionBarSherlock.OnMenuItemSelectedListener
com.actionbarsherlock.ActionBarSherlock.OnOptionsItemSelectedListener
com.actionbarsherlock.ActionBarSherlock.OnPreparePanelListener

如果您还希望在csv中将列名用作标题。

Answer 2

这是一种实现此目的的方法：

import pandas as pd

import json

classDF = pd.DataFrame(columns = ['NameOfClass', 'Type_of_smells'])

with open('/content/Test1.json') as handle:
    dictdump = json.loads(handle.read())

for elem in dictdump :     
    class_dict = {'NameOfClass': elem['fullyQualifiedName'], 'Type_of_smells': elem['WhatEverYourJsonNameIs']}
    class_name = pd.DataFrame.from_dict(class_dict, orient='index')
    class_name = class_name.transpose()
    classDF = pd.concat([classDF, class_name])

classDF.to_csv('/path/class_name.csv', mode='a', header=True)

如何将数据帧转换为csv？

2 个答案: