Question

我有一个字典列表，我有随机键：值对。我还有一个列表 - 我想将字段写入csv文件的顺序（字典的Essentialy键）。我使用下面的代码编写csv文件。

b,d,a,c  
2,3,,

最终的CSV文件按顺序包含密钥：

Sub subFindScrollIE()

Dim boolFound As Boolean



    Dim ie As InternetExplorer

    Set ie = New InternetExplorer

    ie.Navigate "my URL HERE"

    strTemp = "KEYWORD1"

    Do Until ie.ReadyState = READYSTATE_COMPLETE

        'DoEvents

    Loop

    ie.Visible = True

    Set txt = ie.Document.body.createTextRange()

    boolFound = txt.findText(strTemp)

    txt.moveStart "character", -1

    txt.findText strTemp

    txt.Select

    txt.ScrollIntoView




    Set ie = Nothing

End Sub

但是我想根据订单清单。我怎么能这样做？

Answer 1

此代码段会产生您想要的输出

lst=[{"b":2,"d":3},{"a":1,"b":1,"c":5},{"d":7,"c":1}]  
order = ["a","b","c","d"]
with open('file.csv', 'w') as output_file:
    dict_writer = csv.DictWriter(output_file, order)
    dict_writer.writeheader()
    dict_writer.writerows(lst)

Answer 2

您从未使用... tabPanel("plot", tagList( tags$head( tags$style( ".leaflet .legend {width:200px; text-align: left;}", ".leaflet .legend i{float: left;}", ".leaflet .legend label{float:left; text-align: left;}" ) ) ), leafletOutput("leaflet_plot", width = 800, height = 550) ) ... # code to create leaflet output$leaflet_plot <- renderLeaflet({ pal <- c("#F1F1F1", brewer.pal(5, "YlOrBr")) opts <- providerTileOptions(opacity = 0) map <- leaflet(shape_file) %>% addProviderTiles("CartoDB.PositronNoLabels", options = opts) map <- map %>% addPolygons(fillColor = ~colorFactor(pal, shape_file$var)(var) map <- map %>% addLegend("bottomleft", title = "Employment/Acre", pal = colorFactor(pal, NULL), values = ~var) map })。在创建DictWriter时，只需传递而不是{{1}}。

Answer 3

首先从dict列表中获取所有键第二种是基于您的订单列表的键列表 final根据排序的密钥写入标题

lst = [{'b': 2, 'd': 3}, {'a': 1, 'c': 5, 'b': 1}, {'c': 1, 'd': 7}]
flatLst = set([ k for ele in lst for k in ele.keys()])
def sortKey(x):
    return order.index(x) if x in order else len(order)
orderedHeader = sorted( flatLst, key = lambda x:sortKey(x))
with open(filePath,'wb') as f:
     w = csv.DictWriter(f,orderedHeader)
    w.writeheader()
    w.writerows(lst)

输出：

a   b   c   d
    2       3
1   1   5   
        1   7

将python中的字典列表写入具有特定字段顺序的csv

3 个答案: