如何在某个文件中查找dcitionary值并使用Python

Question

我有两个文件config.py，其中编写脚本以读写字典＆amp; dict.py包含字典。我想在key('server')中找到dict.py并将其中的一个键替换为某个值。请注意，现有的其他键应该存在，只应替换server['hostname']字段。有人告诉我如何这可以做到，我尝试了以下方式

dict.py

server = {'hostname': 'ocm-server-31.com',
               'user': 'root',
               'password': 'radia123'
              }

in_servers = {
        'robotwin': {'user': 'root',
                        'esxiuname':'root',
                        'esxipwd':'gone2far',
                        'vmname':'robot12_221'
                        }

      }

csa_server = {'hostname': 'opsware.com',
              'user': 'admin',
              'password': 'cloud'
             }

Config.py

server = {'hostname': 'hyi01lr0bsaehost.com',
               'user': 'root',
               'password': 'opsware',
              }
with open('dict.py','r') as f_in, open('dict.py','w') as f_out:
    for line in f_in :
        if line['server'] == 'server':
            replace_text = f_out.replace(server['hostname'])
            print "Text found "

        else:
            print "Text not found "

Answer 1

# Replace variables in file
with open('conf.py', 'r+') as f:
    content = f.read()
    f.seek(0)
    f.truncate()
    for line in content:
       f.write(content.replace('search_text', 'new_text'))