Python txt文件如何转换成字典

# 读取代码
fr = open('three.txt', 'r')
dic = {}
keys = [] # 用来存储读取的顺序
for line in fr:
  v = line.strip().split(':')
  dic[v[0]] = v[1]
  keys.append(v[0])
fr.close()
print(dic)
# # 写入文件代码 通过keys的顺序写入
# fw = open('wdic.txt', 'w')
# for k in keys:
#   fw.write(k + ':' + dic[k] + '\n')
# fw.close()