I'm studying machinelearning courses of Andrew NG and doing the lab that give.But I meet error in running code in jupyter lab.Down below is my code:
import time
from collections import deque, namedtuple
import gym
import numpy as np
import PIL.Image
import tensorflow as tf
import utils
from pyvirtualdisplay import Display
from tensorflow.keras import Sequential
from tensorflow.keras.layers import Dense, Input
from tensorflow.keras.losses import MSE
from tensorflow.keras.optimizers import Adam
# Set up a virtual display to render the Lunar Lander environment.
Display(visible=0, size=(840, 480)).start();
# Set the random seed for TensorFlow
tf.random.set_seed(utils.SEED)
this code doesn't work and shows error message in the following paragraph.
FileNotFoundError Traceback (most recent call last)
Cell In[2], line 2
1 # Set up a virtual display to render the Lunar Lander environment.
----> 2 Display(visible=0, size=(840, 480)).start();
4 # Set the random seed for TensorFlow
5 tf.random.set_seed(utils.SEED)
File ~\mambaforge\envs\tf2\Lib\site-packages\pyvirtualdisplay\display.py:54, in Display.__init__(self, backend, visible, size, color_depth, bgcolor, use_xauth, retries, extra_args, manage_global_env, **kwargs)
51 if not cls:
52 raise ValueError("unknown backend: %s" % self._backend)
---> 54 self._obj = cls(
55 size=size,
56 color_depth=color_depth,
57 bgcolor=bgcolor,
58 retries=retries,
59 use_xauth=use_xauth,
60 # check_startup=check_startup,
61 extra_args=extra_args,
62 manage_global_env=manage_global_env,
63 **kwargs
64 )
File ~\mambaforge\envs\tf2\Lib\site-packages\pyvirtualdisplay\xvfb.py:44, in XvfbDisplay.__init__(self, size, color_depth, bgcolor, use_xauth, fbdir, dpi, retries, extra_args, manage_global_env)
41 self._fbdir = fbdir
42 self._dpi = dpi
---> 44 AbstractDisplay.__init__(
45 self,
46 PROGRAM,
47 use_xauth=use_xauth,
48 retries=retries,
49 extra_args=extra_args,
50 manage_global_env=manage_global_env,
51 )
File ~\mambaforge\envs\tf2\Lib\site-packages\pyvirtualdisplay\abstractdisplay.py:85, in AbstractDisplay.__init__(self, program, use_xauth, retries, extra_args, manage_global_env)
82 self._pipe_wfd = None
83 self._retries_current = 0
---> 85 helptext = get_helptext(program)
86 self._has_displayfd = "-displayfd" in helptext
87 if not self._has_displayfd:
File ~\mambaforge\envs\tf2\Lib\site-packages\pyvirtualdisplay\util.py:13, in get_helptext(program)
6 cmd = [program, "-help"]
8 # py3.7+
9 # p = subprocess.run(cmd, capture_output=True)
10 # stderr = p.stderr
11
12 # py3.6 also
---> 13 p = subprocess.Popen(
14 cmd,
15 stdout=subprocess.PIPE,
16 stderr=subprocess.PIPE,
17 shell=False,
18 )
19 _, stderr = p.communicate()
21 helptext = stderr.decode("utf-8", "ignore")
File ~\mambaforge\envs\tf2\Lib\subprocess.py:1026, in Popen.__init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, user, group, extra_groups, encoding, errors, text, umask, pipesize, process_group)
1022 if self.text_mode:
1023 self.stderr = io.TextIOWrapper(self.stderr,
1024 encoding=encoding, errors=errors)
-> 1026 self._execute_child(args, executable, preexec_fn, close_fds,
1027 pass_fds, cwd, env,
1028 startupinfo, creationflags, shell,
1029 p2cread, p2cwrite,
1030 c2pread, c2pwrite,
1031 errread, errwrite,
1032 restore_signals,
1033 gid, gids, uid, umask,
1034 start_new_session, process_group)
1035 except:
1036 # Cleanup if the child failed starting.
1037 for f in filter(None, (self.stdin, self.stdout, self.stderr)):
File ~\mambaforge\envs\tf2\Lib\subprocess.py:1538, in Popen._execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, unused_restore_signals, unused_gid, unused_gids, unused_uid, unused_umask, unused_start_new_session, unused_process_group)
1536 # Start the process
1537 try:
-> 1538 hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
1539 # no special security
1540 None, None,
1541 int(not close_fds),
1542 creationflags,
1543 env,
1544 cwd,
1545 startupinfo)
1546 finally:
1547 # Child is launched. Close the parent's copy of those pipe
1548 # handles that only the child should have open. You need
(...)
1551 # pipe will not close when the child process exits and the
1552 # ReadFile will hang.
1553 self._close_pipe_fds(p2cread, p2cwrite,
1554 c2pread, c2pwrite,
1555 errread, errwrite)
FileNotFoundError: [WinError 2] winerror 2 the system cannot find the file specified.
please help me,I really appreciate that! I don't know how to fix it,so I just look for help.
