将多个词典附加到Pandas数据帧:错误DataFrame构造函数未正确调用?

时间:2018-03-19 10:22:47

标签: python pandas dictionary

我正在尝试dictionarypandas dataframe。我遇到了一些麻烦。我尝试了以下

data = {'applicableMargin': '12.50', 'marketType': 'N', 'totalBuyQuantity': '1,14,514', 'buyPrice1': '1,546.30', 'dayLow': '1,541.20', 'symbol': 'ACC', 'cm_adj_low_dt': '23-MAR-17', 'open': '1,571.50', 'sellPrice2': '1,547.85', 'sellPrice4': '1,547.95', 'cm_ffm': '13,249.84', 'buyPrice3': '1,546.00', 'css_status_desc': 'Listed', 'ndStartDate': '-', 'buyQuantity1': '43', 'totalTradedValue': '1,468.42', 'surv_indicator': '-', 'recordDate': '26-JUL-17', 'secDate': '16MAR2018', 'faceValue': '10.00', 'totalTradedVolume': '94,384', 'pricebandlower': '1,411.20', 'sellQuantity4': '16', 'averagePrice': '1,555.79', 'buyPrice2': '1,546.05', 'totalSellQuantity': '84,873', 'closePrice': '0.00', 'buyPrice4': '1,545.90', 'extremeLossMargin': '5.00', 'isinCode': 'INE012A01025', 'buyQuantity4': '48', 'sellPrice3': '1,547.90', 'bcEndDate': '-', 'buyQuantity5': '27', 'indexVar': '-', 'purpose': 'INTERIM DIVIDEND - RS 11/- PER SHARE', 'sellQuantity5': '286', 'series': 'EQ', 'low52': '1,380.40', 'dayHigh': '1,573.70', 'pricebandupper': '1,724.70', 'basePrice': '1,567.95', 'lastPrice': '1,546.05', 'sellQuantity2': '32', 'deliveryToTradedQuantity': '50.45', 'high52': '1,869.95', 'cm_adj_high_dt': '13-SEP-17', 'sellQuantity1': '67', 'buyQuantity2': '155', 'isExDateFlag': False, 'quantityTraded': '2,53,481', 'previousClose': '1,567.95', 'securityVar': '5.74', 'bcStartDate': '-', 'sellQuantity3': '25', 'ndEndDate': '-', 'buyQuantity3': '31', 'companyName': 'ACC Limited', 'sellPrice1': '1,547.65', 'adhocMargin': '-', 'sellPrice5': '1,548.00', 'change': '-21.90', 'exDate': '25-JUL-17', 'varMargin': '7.50', 'pChange': '-1.40', 'buyPrice5': '1,545.85', 'priceBand': 'No Band'}



pd_cols = []
for i in data:
    pd_cols.append(i)

#fut_data = pd.DataFrame()
#fut_data.columns = pd_cols
fut_data = pd.DataFrame(data.items(), columns=pd_cols)

这会出错:

  

追踪(最近一次通话):    文件"",第1行,in    文件" C:\ Python34 \ lib \ site-packages \ pandas \ core \ frame.py",第345行,> init      引发PandasError(' DataFrame构造函数未正确调用!')   pandas.core.common.PandasError:未正确调用DataFrame构造函数!

在此之后,我会有更多dict,它们将具有相同的columns。我想将它们全部添加到同一个database

提前致谢。

3 个答案:

答案 0 :(得分:1)

这能为您提供所需的输出吗?

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        android:layout_width="match_parent"
        android:layout_height="250dp"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        android:visibility="visible">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">


            <ImageView
                android:id="@+id/appBarImg"
                android:layout_width="match_parent"
                android:layout_height="250dp"
                android:background="@drawable/ic_launcher_background"
                app:layout_collapseMode="parallax" />

        </LinearLayout>





       <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:tabIndicatorColor="#FFF"
            app:tabMode="scrollable"
            app:tabPaddingEnd="15dp"
            app:tabPaddingStart="15dp">

            <android.support.design.widget.TabItem
                android:id="@+id/tabItem"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Schengen" />

            <android.support.design.widget.TabItem
                android:id="@+id/tabItem2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Rest Of World" />

            <android.support.design.widget.TabItem
                android:id="@+id/tabItem3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Worldwide" />

        </android.support.design.widget.TabLayout>
    </android.support.design.widget.AppBarLayout>

当我运行上面的内容时,我得到一个1行的数据帧:

import pandas as pd
data = {'applicableMargin': '12.50', 'marketType': 'N', 'totalBuyQuantity': '1,14,514', 'buyPrice1': '1,546.30', 'dayLow': '1,541.20', 'symbol': 'ACC', 'cm_adj_low_dt': '23-MAR-17', 'open': '1,571.50', 'sellPrice2': '1,547.85', 'sellPrice4': '1,547.95', 'cm_ffm': '13,249.84', 'buyPrice3': '1,546.00', 'css_status_desc': 'Listed', 'ndStartDate': '-', 'buyQuantity1': '43', 'totalTradedValue': '1,468.42', 'surv_indicator': '-', 'recordDate': '26-JUL-17', 'secDate': '16MAR2018', 'faceValue': '10.00', 'totalTradedVolume': '94,384', 'pricebandlower': '1,411.20', 'sellQuantity4': '16', 'averagePrice': '1,555.79', 'buyPrice2': '1,546.05', 'totalSellQuantity': '84,873', 'closePrice': '0.00', 'buyPrice4': '1,545.90', 'extremeLossMargin': '5.00', 'isinCode': 'INE012A01025', 'buyQuantity4': '48', 'sellPrice3': '1,547.90', 'bcEndDate': '-', 'buyQuantity5': '27', 'indexVar': '-', 'purpose': 'INTERIM DIVIDEND - RS 11/- PER SHARE', 'sellQuantity5': '286', 'series': 'EQ', 'low52': '1,380.40', 'dayHigh': '1,573.70', 'pricebandupper': '1,724.70', 'basePrice': '1,567.95', 'lastPrice': '1,546.05', 'sellQuantity2': '32', 'deliveryToTradedQuantity': '50.45', 'high52': '1,869.95', 'cm_adj_high_dt': '13-SEP-17', 'sellQuantity1': '67', 'buyQuantity2': '155', 'isExDateFlag': False, 'quantityTraded': '2,53,481', 'previousClose': '1,567.95', 'securityVar': '5.74', 'bcStartDate': '-', 'sellQuantity3': '25', 'ndEndDate': '-', 'buyQuantity3': '31', 'companyName': 'ACC Limited', 'sellPrice1': '1,547.65', 'adhocMargin': '-', 'sellPrice5': '1,548.00', 'change': '-21.90', 'exDate': '25-JUL-17', 'varMargin': '7.50', 'pChange': '-1.40', 'buyPrice5': '1,545.85', 'priceBand': 'No Band'}
df = pd.DataFrame.from_dict([data])

print(df.iloc[:,:5])

如果您有多个类似的词组,请将它们全部放在如下列表中:

  adhocMargin applicableMargin averagePrice basePrice bcEndDate
0           -            12.50     1,555.79  1,567.95         -

这导致每个字典有一行的数据帧。

答案 1 :(得分:1)

这对我有用。由于此错误,您可能会出现复制粘贴错误。

fut_data = pd.DataFrame.from_dict(data, orient='index').T

print(fut_data)

#   applicableMargin marketType totalBuyQuantity buyPrice1    dayLow symbol  \
# 0            12.50          N         1,14,514  1,546.30  1,541.20    ACC   

#   cm_adj_low_dt      open sellPrice2 sellPrice4    ...     companyName  \
# 0     23-MAR-17  1,571.50   1,547.85   1,547.95    ...     ACC Limited   

#   buyPrice5 priceBand  
# 0  1,545.85   No Band  

# [1 rows x 67 columns]

您可以附加如下:

df = pd.DataFrame.from_dict(data, orient='index').T

df = df.append(pd.DataFrame.from_dict(data2, orient='index').T)

此处data2另一个类似词典。

答案 2 :(得分:0)

虽然以前的答案更好,但如果它适合你,你可以试试这个荒谬的解决方案:

    fut_data = pd.DataFrame(data,index=[0])

要添加更多行,您可以尝试:

    fut_data1 = pd.DataFrame(data1,index=[1])
    fut_data.append(fut_data1)

    fut_data1 = pd.DataFrame(data1,index=[i]) #where i is a loop variable
    fut_data.append(fut_data1)