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我想創建一個可導入的模塊來刪除一系列的列(特別是我正在使用的文件中的列73-177)。我試圖編輯這個文件的I/O代碼是爲刪除基於字段名稱的列而編寫的。我想修改此代碼以刪除csv文件中的列73-177。我需要做什麼來完成這個任務?刪除csv列的範圍
def removeColumns(num1, num2, inputFILE, FileName): inPUTfile = open(inputFILE, 'r') outPUTfile = open(FileName, 'w') line = inPUTfile.readline() while line: # Delete Specified columns. First column range number, second column range number (+1) lineList = line.split('\t') removeCOL = "Calendar-Year" i = 0 while lineList[i] != removeCOL: #(linesout?): i = i + 1 lineList.pop(i) #remove these fields from the list.append #write modified fields remove = "\t".join(lineList) outPUTfile.write(line) #write the new field names outfile for line in inPUTfile: #remove field i from each remaining line and write it in the output file &modify input line lineList = line.split() #convert to a list lineList.pop(i) #remove fields from the list line = '\t'.join(lineList) line = line + '\n' #add a carriage return to the end of the row outPUTfile.write(line)# Write the modified line in the output file inPUTfile.close() #close the input file outPUTfile.close() #close the output file return outPUTfile print outPUTfile
我試圖運行的代碼,並遺憾的是沒有刪除列。我是一個使用python腳本編寫的初學者,但是我們的目標是定義一個從任何csv文件中刪除一系列列的過程 – user2316620 2013-04-24 17:50:16
然後第一步肯定會理解'csv'模塊。如上所示,該代碼應該適用於製表符分隔的csv文件;把它變成一個函數是微不足道的。反而發生了什麼?你收到錯誤信息了嗎? – DSM 2013-04-24 17:59:04
沒有錯誤消息。它似乎在python中運行得很好(完全按照提供的代碼使用代碼),但是當我打開新的csv文件來檢查它時,列仍然存在。 – user2316620 2013-04-24 18:08:38