为什么这个字符串弄乱了我的python打印语句

Question

I came across this error when I was trying to print out some user defined strings. When I print out this string I get a weird interaction with the print statement and I am not sure what causes this. Can anyone help me on the right track? I'd be happy to post more information if it's needed!

In the following example the input "my_message" was used

Relevant code snippet:

print("APPENDING [[" + "test1" + "]]")
print("APPENDING [[" + message + "]]")
print(message)

Console output for snippet:

APPENDING [[test1]]
]]PENDING [[my_message
my_message

Answer 1

It's almost certainly a '\\r ' (carriage return) hiding out in the string. Try stripping the message:

print("APPENDING [[" + "test1" + "]]")
print("APPENDING [[" + message.strip() + "]]")

The carriage return will cause output to jump back to the beginning of the line, which is why you see the ]] overwriting part of the line.