I’m stuck on Stage #UN3.
I’ve tried … (mention what you’ve tried so far).
Here are my logs:
[compile] Moved ./.codecrafters/run.sh → ./your_program.sh
[compile] Compilation successful.
[tester::#UN3] Running tests for Stage #UN3 (Redirection - Append stderr)
[tester::#UN3] [setup] export PATH=/tmp/strawberry/raspberry/raspberry:$PATH
[tester::#UN3] Running ./your_program.sh
[your-program] $ ls -1 nonexistent >> /tmp/baz/foo.md
[your-program] ls: nonexistent: No such file or directory
[tester::#UN3] ✓ Received error message
[tester::#UN3] ✓ File: /tmp/baz/foo.md is empty
[your-program] $ ls -1 nonexistent 2>> /tmp/baz/qux.md
[your-program] $ cat /tmp/baz/qux.md
[your-program] ls: nonexistent: No such file or directory
[tester::#UN3] ✓ Received redirected file content
[your-program] $ echo "James says Error" 2>> /tmp/baz/quz.md
[your-program] James says Error
[tester::#UN3] ✓ Received redirected file content
[your-program] $ cat nonexistent 2>> /tmp/baz/quz.md
[your-program] $ ls -1 nonexistent 2>> /tmp/baz/quz.md
[your-program] $ cat /tmp/baz/quz.md
[your-program] ls: nonexistent: No such file or directory
[tester::#UN3] Output does not match expected value.
[tester::#UN3] Expected: "cat: nonexistent: No such file or directory"
[tester::#UN3] Received: "ls: nonexistent: No such file or directory"
[your-program] $
[tester::#UN3] Assertion failed.
[tester::#UN3] Test failed (try setting 'debug: true' in your codecrafters.yml to see more details)
And here’s a snippet of my code:
import sys
import shutil
import os
import shlex
import contextlib
def main():
builtins = {"type", "exit", "echo", "pwd", "cd"}
while True:
sys.stdout.write("$ ")
command = sys.stdin.readline().strip().replace('1>', '>')
cmd = shlex.split(command, posix=True)
stdout = sys.stdout if ">" not in command else open(cmd[-1], f'{"a" if ">>" in cmd else "w"}+')
match cmd:
case ["exit", arg]: sys.exit(int(arg))
case ["exit"]: sys.exit(0)
case ["echo", *args]: (stdout if '2>' not in args and '2>>' not in args else sys.stdout).write(f"{' '.join(args if stdout == sys.stdout else args[:-2])}\n")
case ["type", arg] if arg in builtins: stdout.write(f"{arg} is a shell builtin\n")
case ["type", arg] if path := shutil.which(arg): stdout.write(f"{arg} is {path}\n")
case ["type", arg] if arg not in builtins: stdout.write(f"{arg}: not found\n")
case ["pwd"]: sys.stdout.write(f"{os.getcwd()}\n")
case ["cd", dir_path] if (path_exists := os.path.exists(expanded := os.path.expanduser(dir_path))): os.chdir(expanded)
case ["cd", dir_path] if not path_exists: stdout.write(f"cd: {os.path.expanduser(dir_path)}: No such file or directory\n")
case [fn, *args] if shutil.which(fn): os.system(command)
case [fn, *args] if not shutil.which(fn): stdout.write(f"{fn}: command not found\n")
if ">" in command:
stdout.close()
if __name__ == "__main__":
main()
