寫入CSV文件但格式不正確

我試圖寫入空的CSV文件。寫入CSV文件但格式不正確

我要上CSV文件的輸出是這樣的：

Date,Open,High,Low,Close,Volume,Adj Close 
2014-03-28,538.32,538.94,534.25,536.86,7106900,536.86 
2014-03-27,540.02,541.50,535.12,537.46,7929700,537.46 
2014-03-26,546.52,549.00,538.86,539.78,10706000,539.78 
2014-03-25,541.50,545.75,539.59,544.99,10081900,544.99 
2014-03-24,538.42,540.50,535.06,539.19,12703600,539.19 
2014-03-21,531.93,533.75,526.33,532.87,13373200,532.87 
2014-03-20,529.89,532.67,527.35,528.70,7442800,528.70 
2014-03-19,532.26,536.24,529.00,531.26,8027000,531.26 
2014-03-18,525.90,531.97,525.20,531.40,7487400,531.40 
2014-03-17,527.70,529.97,525.85,526.74,7126600,526.74

但我最終得到一個非常大的行數，每一個字符是不同的小區。

我的代碼是：

with open('prova.csv','w',newline='') as f: 
    writer = csv.writer(f,delimiter=',',quotechar='"') 
    writer.writerows(request3) 
    f.flush() 
    f.close()

和請求3的輸出是相同的表如上。

來源

2014-04-01 pkpkpk

請與編程語言添加一個標籤。 –

它的Python，謝謝 – pkpkpk

不知道它...... GL –

如果request3是這樣的字符串：

request3 = """Date,Open,High,Low,Close,Volume,Adj Close 
2014-03-28,538.32,538.94,534.25,536.86,7106900,536.86 
2014-03-27,540.02,541.50,535.12,537.46,7929700,537.46 
2014-03-26,546.52,549.00,538.86,539.78,10706000,539.78 
2014-03-25,541.50,545.75,539.59,544.99,10081900,544.99 
2014-03-24,538.42,540.50,535.06,539.19,12703600,539.19 
2014-03-21,531.93,533.75,526.33,532.87,13373200,532.87 
2014-03-20,529.89,532.67,527.35,528.70,7442800,528.70 
2014-03-19,532.26,536.24,529.00,531.26,8027000,531.26 
2014-03-18,525.90,531.97,525.20,531.40,7487400,531.40 
2014-03-17,527.70,529.97,525.85,526.74,7126600,526.74"""

然後是的，你將有問題。從the documentation

甲行必須是字符串或數字的用於編寫器對象序列中，並且字典映射字段名到字符串或數字（通過使它們通過STR（）第一）爲DictWriter對象。

所以，如果你不使用DictWriter那麼你會希望有看起來像數據：

request3 = [['Date', 'Open', 'High', 'Low', 'Close', 'Volume', 'Adj Close'], 
      ['2014-03-28', '538.32', '538.94', '432', '123'], 
      # more rows here 
      ]

來源

2014-04-01 16:42:32

如果'request3'是那個字符串，爲什麼不直接寫入文件呢？假設它應該有新行。 – 2rs2ts

我已經將request3轉換爲列表，其中='日期'，'打開'，'高'，'低'，'關閉'，'音量'，'調節關閉\ n2014-03-28'，'538.32'， '538.94'，'534.25'，'536.86'，'7106900'，'536.86 \ n2014-03-27'，'540.02'，'541.50'，ecc通過執行** request3 = request3 [1：-1] .split （'，'）** – pkpkpk

@Paolokiller注意你如何編寫一維列表。你需要一個2D列表。 – 2rs2ts

基於在評論您的意見，您在做以下幾點：

request3 = request3[1:-1].split(',')

哪個給你買了1維列表：

['Date', 'Open', 'High', 'Low', 'Close', 'Volume', 'Adj Close\n2014-03-28', 
'538.32', '538.94', '534.25', '536.86', '7106900', '536.86\n2014-03-27', 
'540.02', '541.50', ...]

所以它看起來像你原來的request3像這樣的字符串：

"""Date,Open,High,Low,Close,Volume,Adj Close 
2014-03-28,538.32,538.94,534.25,536.86,7106900,536.86 
2014-03-27,520.02,541.50,..."""

沒有好。你需要這樣的二維列表：

[['Date', 'Open', 'High', 'Low', 'Close', 'Volume', 'Adj Close'], 
['2014-03-28', '538.32', '538.94', '534.25', '536.86', '7106900', '536.86'], 
['2014-03-27', '540.02', '541.50', ...]]

幸運的是，不是很難解決。您需要先取得每一行，然後用逗號分隔每一行。雖然我顯示的多行字符串中沒有換行文字，但它們在那裏;你在輸出中看到了這個'Adj Close\n2014-03-28'。所以，先換行符！

request3Lines = request3[1:-1].split('\n') 
request3Separated = [line.split(',') for line in request3Lines]

一個例子（忽略時使用的某些原因，片）：

>>> request3 = """Date,Open,High,Low,Close,Volume,Adj Close 
2014-03-28,538.32,538.94,534.25,536.86,7106900,536.86 
2014-03-27,540.02,541.50,535.12,537.46,7929700,537.46""" 
>>> request3Lines = request3.split('\n') 
>>> request3Lines 
['Date,Open,High,Low,Close,Volume,Adj Close', '2014-03-28,538.32,538.94,534.25,536.86,7106900,536.86', '2014-03-27,540.02,541.50,535.12,537.46,7929700,537.46'] 
>>> request3Separated = [line.split(',') for line in request3Lines] 
>>> request3Separated 
[['Date', 'Open', 'High', 'Low', 'Close', 'Volume', 'Adj Close'], ['2014-03-28', '538.32', '538.94', '534.25', '536.86', '7106900', '536.86'], ['2014-03-27', '540.02', '541.50', '535.12', '537.46', '7929700', '537.46']]

來源

2014-04-01 16:56:19 2rs2ts

非常感謝，它的作品！我現在有我想要的格式的CSV文件。 – pkpkpk

寫入CSV文件但格式不正確

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