1 files changed, 8 insertions, 13 deletions
diff --git a/src/pip/_vendor/rich/progress.py b/src/pip/_vendor/rich/progress.py
index e7d163c13..8b0a315f3 100644
--- a/src/pip/_vendor/rich/progress.py
+++ b/src/pip/_vendor/rich/progress.py
@@ -4,12 +4,12 @@ import typing
 import warnings
 from abc import ABC, abstractmethod
 from collections import deque
-from collections.abc import Sized
 from dataclasses import dataclass, field
 from datetime import timedelta
 from io import RawIOBase, UnsupportedOperation
 from math import ceil
 from mmap import mmap
+from operator import length_hint
 from os import PathLike, stat
 from threading import Event, RLock, Thread
 from types import TracebackType
@@ -151,7 +151,7 @@ def track(
                 pulse_style=pulse_style,
             ),
             TaskProgressColumn(show_speed=show_speed),
-            TimeRemainingColumn(),
+            TimeRemainingColumn(elapsed_when_finished=True),
         )
     )
     progress = Progress(
@@ -677,7 +677,7 @@ class TimeElapsedColumn(ProgressColumn):
     """Renders time elapsed."""
 
     def render(self, task: "Task") -> Text:
-        """Show time remaining."""
+        """Show time elapsed."""
         elapsed = task.finished_time if task.finished else task.elapsed
         if elapsed is None:
             return Text("-:--:--", style="progress.elapsed")
@@ -1197,18 +1197,13 @@ class Progress(JupyterMixin):
         Returns:
             Iterable[ProgressType]: An iterable of values taken from the provided sequence.
         """
-
-        task_total: Optional[float] = None
         if total is None:
-            if isinstance(sequence, Sized):
-                task_total = float(len(sequence))
-        else:
-            task_total = total
+            total = float(length_hint(sequence)) or None
 
         if task_id is None:
-            task_id = self.add_task(description, total=task_total)
+            task_id = self.add_task(description, total=total)
         else:
-            self.update(task_id, total=task_total)
+            self.update(task_id, total=total)
 
         if self.live.auto_refresh:
             with _TrackThread(self, task_id, update_period) as track_thread:
@@ -1342,7 +1337,7 @@ class Progress(JupyterMixin):
                 RuntimeWarning,
             )
             buffering = -1
-        elif _mode == "rt" or _mode == "r":
+        elif _mode in ("rt", "r"):
             if buffering == 0:
                 raise ValueError("can't have unbuffered text I/O")
             elif buffering == 1:
@@ -1363,7 +1358,7 @@ class Progress(JupyterMixin):
         reader = _Reader(handle, self, task_id, close_handle=True)
 
         # wrap the reader in a `TextIOWrapper` if text mode
-        if mode == "r" or mode == "rt":
+        if mode in ("r", "rt"):
             return io.TextIOWrapper(
                 reader,
                 encoding=encoding,