1
我想解析一個csv文件,在Field3中查找沒有任何「/」的單元並將這些單元複製到fieldoutput行的output.csv文件中。在Python中使用帶csv模塊的DictWriter/Reader
我試着下面的代碼,但我得到這個錯誤:
Traceback (most recent call last):
File "<string>", line 13, in <module>
File "C:\Python27\ArcGIS10.1\Lib\csv.py", line 148, in writerow
return self.writer.writerow(self._dict_to_list(rowdict))
File "C:\Python27\ArcGIS10.1\Lib\csv.py", line 144, in _dict_to_list
", ".join(wrong_fields))
ValueError: dict contains fields not in fieldnames: Field1, Field2, Field3, Field4
這裏是我的代碼:
import csv
f = open("C:\My\Path\file.csv", "r")
reader = csv.DictReader(f, delimiter=';')
writer = open("C:\My\Path\output.csv",'wb')
output = csv.DictWriter(writer, 'fieldoutput', delimiter=';')
print output
for row in reader:
if '/' not in row['Field3'] :
#print row['Field3']
output.writerow(row)
感謝您的幫助!
是的它的工作,但不完全如我所料:我得到的所有行復制,而不只是field3)。這解釋了我用新手的角度設置參數的方式。我想我需要完成:output.writerow(row [Field3])或其他東西。 – Kerplouz 2014-11-05 15:18:02