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PEP 626 - slight word and grammar changes (#1532)

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Ethan Furman 2020-07-17 12:16:39 -07:00 committed by GitHub
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@ -44,7 +44,7 @@ Rather than attempt to fix the ``co_lnotab`` attribute, a new method
``co_lines()`` will be added, which returns an iterator over bytecode offsets and source code lines.
Ensuring that the bytecode is annotated correctly to enable accurate line number information means that
some bytecodes must be marked as artificial, and not having a line number.
some bytecodes must be marked as artificial, and not have a line number.
Some care must be taken not to break existing tooling.
To minimize breakage, the ``co_lnotab`` attribute will be retained, but lazily generated on demand.
@ -72,14 +72,14 @@ The f_lineno attribute
''''''''''''''''''''''
* When a frame object is created, the ``f_lineno`` will be set to the line
at which the function, or class is defined. For modules it will be set to zero.
at which the function or class is defined. For modules it will be set to zero.
* The ``f_lineno`` attribute will be updated to match the line number about to be executed,
even if tracing is turned off and no event is generated.
The new co_lines() method of code objects
'''''''''''''''''''''''''''''''''''''''''
The ``co_lines()`` method will return an iterator which yields tupled of values,
The ``co_lines()`` method will return an iterator which yields tuples of values,
each representing the line number of a range of bytecodes. Each tuple will consist of three values:
* ``start`` -- The offset (inclusive) of the start of the bytecode range
@ -122,8 +122,8 @@ Any tools that parse the ``co_lnotab`` attribute of code objects will need to mo
Tools that use ``sys.settrace`` will be unaffected, except in cases where the "line" events they receive are more accurate.
Examples of code for which the sequence of trace events which will change
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Examples of code for which the sequence of trace events will change
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
In the following examples, events are listed as "name", ``f_lineno`` pairs.