Python-写入 CSV 文件的问题

Question

我可以将结果打印到终端，但无法写入 csv 文件

完整文件:https://1drv.ms/u/s!AizscpxS0QM4hJo5SnYOHAcjng-jww

 datapath = '1.json'

data = json.load(open(datapath))

with open('1.json') as file:
  data = json.load(file)

for element in data['RoleDetailList']:
 if 'RoleName' in element.keys():
   s = element['RoleName']
       #print s

 with open('roleassign.csv', 'wt') as file:
  file.write('Role,Policy\n')
  for policy in element['AttachedManagedPolicies']:
    c = s + ',' + policy['PolicyName']
    #print c
    file.write(c + '\n')

在 csv 文件中，我只得到标题，当取消注释 print c 时，我看到行被打印到终端(输出)

输出中的一些行:

ADFS-amtest-ro,pol-amtest-ro
adfs-host-role,pol-amtest-ro
aws-elasticbeanstalk-ec2-role,AWSElasticBeanstalkWebTier

Answer 1

请尝试以下代码:

with open('output.json') as file:
    data = json.load(file)
with open('roleassign.csv', 'wt') as file:
    file.write('Role,Policy\n')
    for element in data['RoleDetailList']:
        if 'RoleName' in element.keys():
            s= element['RoleName']
        for policy in element['AttachedManagedPolicies']:
            c = s + ',' + policy['PolicyName']
            file.write(c + '\n')

您的文件编写器正在循环中打开，每次它都仅使用 header 覆盖文件。干脆就搬出去了。