Carriage return ignored/forgotten

[TheLostProgrammer]

I am trying to run this code:

print("This text will be replaced\rWith this text")

This code outputs as:

This text will be replacedWith this text

The output should be:

With this text be replaced

I then ran this code:

import requests
code = """print('This text will be replaced\rWith this text')"""
resp = requests.post("https://emkc.org/api/v2/piston/execute", {"language": f"python", "version": "3.10.0", "files": [code]}).json()
output = "\n".join(line for line in resp['run']['output'].splitlines())
print(output)

Which gave me this output:

  File "/piston/jobs/8c28a39a-0386-4f93-86f5-1e5cc2ac494e/file0.code", line 1
    print("This text will be replaced
          ^
SyntaxError: unterminated string literal (detected at line 1)

This is an issue as I am trying to create a Python challenge for my Discord bot that contains the carriage return character.

[xjzi]

The terminal emulator is responsible for the replacement behavior of carriage returns. This means that the expected behavior is to print out the whole string, including the carriage return.

[xjzi]

You can see this with the following commands:

# Replacement happens
python -c 'print("This text will be replaced\rWith this text")'
# No replacement, file is 42 bytes
python -c 'print("This text will be replaced\rWith this text")' > file
du --bytes file

[xjzi]

As for the second issue, the carriage return is interpreted before being sent to Piston so python sees a carriage return (functionally a new line) instead of \r. You can see this by doing the following:

len("""test""")
len("""\r""")

[xjzi]

If you want to keep the escape code intact you should escape the escape character, like so: string = """\\r"""