diff options
| -rw-r--r-- | Doc/library/pdb.rst | 6 | ||||
| -rw-r--r-- | Doc/whatsnew/3.4.rst | 16 | ||||
| -rwxr-xr-x | Lib/pdb.py | 8 | ||||
| -rw-r--r-- | Lib/test/test_pdb.py | 9 | ||||
| -rw-r--r-- | Misc/NEWS | 3 |
5 files changed, 31 insertions, 11 deletions
diff --git a/Doc/library/pdb.rst b/Doc/library/pdb.rst index f4e37ac..66a78d0 100644 --- a/Doc/library/pdb.rst +++ b/Doc/library/pdb.rst @@ -41,7 +41,7 @@ of the debugger is:: .. versionchanged:: 3.3 Tab-completion via the :mod:`readline` module is available for commands and command arguments, e.g. the current global and local names are offered as - arguments of the ``print`` command. + arguments of the ``p`` command. :file:`pdb.py` can also be invoked as a script to debug other scripts. For example:: @@ -309,7 +309,7 @@ by the local file. ``end`` to terminate the commands. An example:: (Pdb) commands 1 - (com) print some_variable + (com) p some_variable (com) end (Pdb) @@ -409,7 +409,7 @@ by the local file. .. pdbcommand:: pp expression - Like the :pdbcmd:`print` command, except the value of the expression is + Like the :pdbcmd:`p` command, except the value of the expression is pretty-printed using the :mod:`pprint` module. .. pdbcommand:: whatis expression diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst index ed4ea17..373f8de 100644 --- a/Doc/whatsnew/3.4.rst +++ b/Doc/whatsnew/3.4.rst @@ -302,6 +302,22 @@ descriptors or a Windows handle: * :func:`os.get_handle_inheritable`, :func:`os.set_handle_inheritable` +pdb +--- + +The ``print`` command has been removed from :mod:`pdb`, restoring access to the +``print`` function. + +Rationale: Python2's ``pdb`` did not have a ``print`` command; instead, +entering ``print`` executed the ``print`` statement. In Python3 ``print`` was +mistakenly made an alias for the pdb :pdbcmd:`p` command. ``p``, however, +prints the ``repr`` of its argument, not the ``str`` like the Python2 ``print`` +command did. Worse, the Python3 ``pdb print`` command shadowed the Python3 +``print`` function, making it inaccessible at the ``pdb`` prompt. + +(Contributed by Connor Osborn in :issue:`18764`.) + + poplib ------ @@ -1159,15 +1159,13 @@ class Pdb(bdb.Bdb, cmd.Cmd): return _rstr('** raised %s **' % err) def do_p(self, arg): - """p(rint) expression + """p expression Print the value of the expression. """ try: self.message(repr(self._getval(arg))) except: pass - # make "print" an alias of "p" since print isn't a Python statement anymore - do_print = do_p def do_pp(self, arg): """pp expression @@ -1388,7 +1386,7 @@ class Pdb(bdb.Bdb, cmd.Cmd): placed in the .pdbrc file): # Print instance variables (usage "pi classInst") - alias pi for k in %1.__dict__.keys(): print "%1.",k,"=",%1.__dict__[k] + alias pi for k in %1.__dict__.keys(): print("%1.",k,"=",%1.__dict__[k]) # Print instance variables in self alias ps pi self """ @@ -1546,7 +1544,7 @@ if __doc__ is not None: 'help', 'where', 'down', 'up', 'break', 'tbreak', 'clear', 'disable', 'enable', 'ignore', 'condition', 'commands', 'step', 'next', 'until', 'jump', 'return', 'retval', 'run', 'continue', 'list', 'longlist', - 'args', 'print', 'pp', 'whatis', 'source', 'display', 'undisplay', + 'args', 'p', 'pp', 'whatis', 'source', 'display', 'undisplay', 'interact', 'alias', 'unalias', 'debug', 'quit', ] diff --git a/Lib/test/test_pdb.py b/Lib/test/test_pdb.py index 0babaa0..e17f933 100644 --- a/Lib/test/test_pdb.py +++ b/Lib/test/test_pdb.py @@ -205,7 +205,8 @@ def test_pdb_breakpoint_commands(): ... 'enable 1', ... 'clear 1', ... 'commands 2', - ... 'print 42', + ... 'p "42"', + ... 'print("42", 7*6)', # Issue 18764 (not about breakpoints) ... 'end', ... 'continue', # will stop at breakpoint 2 (line 4) ... 'clear', # clear all! @@ -252,11 +253,13 @@ def test_pdb_breakpoint_commands(): (Pdb) clear 1 Deleted breakpoint 1 at <doctest test.test_pdb.test_pdb_breakpoint_commands[0]>:3 (Pdb) commands 2 - (com) print 42 + (com) p "42" + (com) print("42", 7*6) (com) end (Pdb) continue 1 - 42 + '42' + 42 42 > <doctest test.test_pdb.test_pdb_breakpoint_commands[0]>(4)test_function() -> print(2) (Pdb) clear @@ -34,6 +34,9 @@ Core and Builtins Library ------- +- Issue #18764: remove the 'print' alias for the PDB 'p' command so that it no + longer shadows the print function. + - Issue #19158: a rare race in BoundedSemaphore could allow .release() too often. |