Can you please help me in python email library

I added piece of code in my program.Can you please help me why it is not working. Below is the sample code:

wrapper = MIMEMultipart('mixed')

text1 = "this is a sample text"

text2 = "this is a sample msg"

part1 = MIMEText(text1, "plain")

part2 = MIMEText(text2, "plain")

wrapper.attach(part1)

wrapper.attach(part2)

output: Part1 value is coming in msg body but part2 value is coming as attachment in mail.why part2 value is not coming in msg body?? Any idea.