Update train, val tqdm to fixed width (#5367)

* Update tqdm for fixed width

* Update val.py

* Update val.py

* Try ncols= in train.py

* NCOLS

* NCOLS

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* bar_format

* position 0 leave true

* exp0

* auto

* auto

* Cleanup

* Cleanup

* Cleanup

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

utils/general.py

@@ -11,6 +11,7 @@ import os
 import platform
 import random
 import re
+import shutil
 import signal
 import time
 import urllib
@@ -834,3 +835,7 @@ def increment_path(path, exist_ok=False, sep='', mkdir=False):
     if mkdir:
         path.mkdir(parents=True, exist_ok=True)  # make directory
     return path
+
+
+# Variables
+NCOLS = 0 if is_docker() else shutil.get_terminal_size().columns  # terminal window size