python 字符串检索值

Question

Can some one please help me how to get the Value for Key: 'labelnumber' from string below?

Tried json manipulation and eval but no luck.

{'Value': 'infotech', 'Key': 'company'},{'Value': 'printing', 'Key': 'LineofBusiness'},{'Value': 'Non-Prod', 'Key': 'Environment'},{'Value': '1234-5623', 'Key': 'labelnumber'},{'Value': 'globalinfra', 'Key': 'ApplicationName'}

I need to get the value of "labelnumber" key which is "1234-5623"

This string comes from a dictionary

d1 = {'Name': 'Maintags', 'Type': 'String', 'Value': "{'Value': 'infotech', 'Key': 'company'},{'Value': 'printing', 'Key': 'LineofBusiness'},{'Value': 'Non-Prod', 'Key': 'Environment'},{'Value': '1234-5623', 'Key': 'labelnumber'},{'Value': 'globalinfra', 'Key': 'ApplicationName'}"}

>>>print(d1)

    {'Name': 'Maintags', 'Type': 'String', 'Value': "{'Value': 'infotech', 'Key': 'company'},{'Value': 'printing', 'Key': 'LineofBusiness'},{'Value': 'Non-Prod', 'Key': 'Environment'},{'Value': '1234-5623', 'Key': 'labelnumber'},{'Value': 'globalinfra', 'Key': 'ApplicationName'}"}

>>>print(type(d1))

    <class 'dict'>

>>>print(d1["Value"])

    {'Value': 'infotech', 'Key': 'company'},{'Value': 'printing', 'Key': 'LineofBusiness'},{'Value': 'Non-Prod', 'Key': 'Environment'},{'Value': '1234-5623', 'Key': 'labelnumber'},{'Value': 'globalinfra', 'Key': 'ApplicationName'}

Answer 1

d1 = {'Name': 'Maintags', 'Type': 'String', 'Value': "{'Value': 'infotech', 'Key': 'company'},{'Value': 'printing', 'Key': 'LineofBusiness'},{'Value': 'Non-Prod', 'Key': 'Environment'},{'Value': '1234-5623', 'Key': 'labelnumber'},{'Value': 'globalinfra', 'Key': 'ApplicationName'}"}
my_values_dict = {d['Key']:d['Value'] for d in eval(d1['Value'])}
print(my_values_dict['labelnumber'])

output: 1234-5623

Use eval() to get a tuple of dictionaries, loop through it to turn it in a single dictionary, access the key you need.