+-- MemoryError # Out of memory. Could be too late to start deleting vars.
+-- NameError # Raised when nonexistent name (variable/func/class) is used.
| +-- UnboundLocalError # Raised when local name is used before it's being defined.
+-- OSError # Errors such as FileExistsError/PermissionError (see #Open).
+-- OSError # Errors such as FileExistsError/TimeoutError (see #Open).
| +-- ConnectionError # Errors such as BrokenPipeError/ConnectionAbortedError.
+-- RuntimeError # Raised by errors that don't fall into other categories.
| +-- NotImplementedEr… # Can be raised by abstract methods or by unfinished code.
| +-- RecursionError # Raised when the maximum recursion depth is exceeded.
+-- StopIteration # Raised by next() when run on an empty iterator.
+-- TypeError # Raised when an argument is of the wrong type.
+-- StopIteration # Raised when an empty iterator is passed to next().
+-- TypeError # When an argument of the wrong type is passed to function.
+-- ValueError # When argument has the right type but inappropriate value.
```
@ -2151,7 +2151,7 @@ with <lock>: # Enters the block by calling acq
<bool> = <Future>.cancel() # Cancels or returns False if running/finished.
<iter> = as_completed(<coll_of_Futures>) # Next() waits for next completed Future.
```
* **Map() and as\_completed() also accept 'timeout' arg. that causes TimeoutError when next() is called. Map() times from the original call, while as\_completed() from the call to next().**
* **Map() and as\_completed() also accept 'timeout' argument. It causes TimeoutError when next() is called if result isn't available in 'timeout' seconds from the original call.**
* **Exceptions that happen inside threads are raised when next() is called on map's iterator or when result() is called on a Future. Its exception() method returns exception or None.**
* **ProcessPoolExecutor provides true parallelism, but everything sent to/from workers must be [pickable](#pickle). Queues must be sent using executor's 'initargs' and 'initializer' parameters.**
<iter> = as_completed(<coll_of_Futures>) <spanclass="hljs-comment"># Next() waits for next completed Future.</span>
</code></pre>
<ul>
<li><strong>Map() and as_completed() also accept 'timeout' arg. that causes TimeoutError when next() is called. Map() times from the original call, while as_completed() from the call to next().</strong></li>
<li><strong>Map() and as_completed() also accept 'timeout' argument. It causes TimeoutError when next() is called if result isn't available in 'timeout' seconds from the original call.</strong></li>
<li><strong>Exceptions that happen inside threads are raised when next() is called on map's iterator or when result() is called on a Future. Its exception() method returns exception or None.</strong></li>
<li><strong>ProcessPoolExecutor provides true parallelism, but everything sent to/from workers must be <ahref="#pickle">pickable</a>. Queues must be sent using executor's 'initargs' and 'initializer' parameters.</strong></li>
Jure Šorn
1 year ago