relax async test requirement, expose more coverage

tests/py37_asyncio.py

@@ -99,5 +99,5 @@ async def test_as_completed():
         for i in as_completed([asyncio.sleep(0.01 * i)
                                for i in range(30, 0, -1)], file=our_file):
             await i
-        assert 0.29 < time() - t - 2 * skew < 0.31
+        assert 0.28 < time() - t - 2 * skew < 0.32
         assert '30/30' in our_file.getvalue()

tqdm/cli.py

@@ -48,8 +48,7 @@ def isBytes(val):
 
 
 def posix_pipe(fin, fout, delim=b'\\n', buf_size=256,
-               callback=lambda float: None,  # pragma: no cover
-               callback_len=True):
+               callback=lambda float: None, callback_len=True):
     """
     Params
     ------
@@ -68,7 +67,7 @@ def posix_pipe(fin, fout, delim=b'\\n', buf_size=256,
 
             # flush at EOF
             if not tmp:
-                getattr(fout, 'flush', lambda: None)()  # pragma: no cover
+                getattr(fout, 'flush', lambda: None)()
                 return
 
             fp_write(tmp)
@@ -101,7 +100,7 @@ def posix_pipe(fin, fout, delim=b'\\n', buf_size=256,
                 else:
                     for i in buf.split(delim):
                         callback(i)
-            getattr(fout, 'flush', lambda: None)()  # pragma: no cover
+            getattr(fout, 'flush', lambda: None)()
             return  # n
 
         while True:

tqdm/utils.py

@@ -273,9 +273,9 @@ class CallbackIOWrapper(ObjectWrapper):
 def _is_utf(encoding):
     try:
         u'\u2588\u2589'.encode(encoding)
-    except UnicodeEncodeError:  # pragma: no cover
+    except UnicodeEncodeError:
         return False
-    except Exception:  # pragma: no cover
+    except Exception:
         try:
             return encoding.lower().startswith('utf-') or ('U8' == encoding)
         except: