Question

我正在尝试读取csv文件。在下面的代码中，没有输入for循环，也没有抛出异常：

csvfile = r"C:\Development\input-data\Locations.csv"
try:
    with open(csvfile, 'r') as csvfile:
        reader = csv.reader(csvfile, delimiter=' ', quotechar='|') 
        for row in reader:
            #print ("row: " + str(row)) 
            print (', '.join(row))
except IOError:
    print ("IOError: " + csvFile)
    sys.exit()

我做错了什么？

编辑：错误是2部分。首先，正如@bernie建议的那样，我用我的代码覆盖了csvfile。其次，改变代码，如@KarenClark所示。

Answer 1

使用open＆＃34;在＆＃34;中声明csv文件部分，像这样：

try:
    with open(r'C:\Development\input-data\Locations.csv', 'rb') as csvfile:
        reader = csv.reader(csvfile, delimiter=' ', quotechar='|') 
        for row in reader:
            print (', '.join(row))
except IOError:
    print ("IOError: " + csvFile)
    sys.exit()

Answer 2

我尝试使用for循环和if else条件读取csv文件。看起来太大了但它对我有用...... 试试吧。

import sys
f1 =open("csv_file.csv")
def splitter(f1):
   f2 = f1.readlines()
   check = 0
   check1 = 0
   x =""
   y =""
   temp=[]
   for row in f2:
      if row.find('"')!= -1:
        for i in row:
            if i == '"':
                check = check+1
                if (check)%2 == 0:
                    temp.append(x)
                    x=""
                continue
            if (check)%2 != 0:
                x = x+i
                continue
            if i == ',':
                check1= check1+1
                if (check1)>= 2:
                    if y=="":
                        continue
                    temp.append(y)
                    y=""
                continue
            if i=='\n':
                y = y+i
                temp.append(y)
                y=""
                continue
            if (check1)>=1:
                y = y+i
                continue
            if i=="":
                continue
        for s in temp:
            print s
        temp=[]
    else:
        z= row.split(',')
        for a in z:
            print a

def main(argv):
  splitter(f1)

if __name__ == "__main__":
  try:
    main(sys.argv)
except KeyboardInterrupt:
    pass

`

无法读取csv文件

2 个答案: