我尝试使用pandas读取数据框的我的csv文件如下所示：
Country Name Country Code Series Name Series Code
Afghanistan AFG Access to electricity (% of population) EG.ELC.ACCS.ZS
Albania ALB Life expectancy at birth, male (years) SP.DYN.LE00.MA.IN
我用命令打开它：
df = pd.read_csv(file, skiprows=0, usecols=[2,3])
当它运行时：
for index, row in frame.iterrows():
if row[1] == 'SP.DYN.LE00.MA.IN':
print("Sample ", row[0])
我得到了输出：
Sample nan
有时它会正确读取“系列名称”列中的值，但有时不会，因为这个“nan”。 我应该怎么做才能使它经常以逗号的形式阅读“系列名称”？
感谢。
编辑：
我尝试用逗号清除文件数据，但它仍然不起作用：
def cleanCommasFromCSV(path_old, path_new):
with open(path_old, "r", newline="") as infile, open(path_new, "w", newline="") as outfile:
reader = csv.reader(infile)
writer = csv.writer(outfile)
for row in reader:
writer.writerow(item.replace(",", "") for item in row)