Add commands argument to pdb.Pdb

Author: gaogaotiantian

Lib/pdb.py

@@ -307,7 +307,7 @@ class Pdb(bdb.Bdb, cmd.Cmd):
     _file_mtime_table = {}
 
     def __init__(self, completekey='tab', stdin=None, stdout=None, skip=None,
-                 nosigint=False, readrc=True):
+                 nosigint=False, readrc=True, commands=None):
         bdb.Bdb.__init__(self, skip=skip)
         cmd.Cmd.__init__(self, completekey, stdin, stdout)
         sys.audit("pdb.Pdb")
@@ -346,6 +346,9 @@ def __init__(self, completekey='tab', stdin=None, stdout=None, skip=None,
             except OSError:
                 pass
 
+        if commands is not None:
+            self.rcLines.extend(commands)
+
         self.commands = {} # associates a command list to breakpoint numbers
         self.commands_doprompt = {} # for each bp num, tells if the prompt
                                     # must be disp. after execing the cmd list

Lib/test/test_pdb.py

@@ -833,6 +833,18 @@ def test_pdb_where_command():
     """
 
 
+def test_pdb_commands_at_init():
+    """Test that commands can be passed to the constructor
+
+    >>> def test_function():
+    ...     x = 1
+    ...     import pdb; pdb.Pdb(nosigint=True, readrc=False, commands=['p x', 'c']).set_trace()
+
+    >>> test_function()
+    1
+    """
+
+
 # skip this test if sys.flags.no_site = True;
 # exit() isn't defined unless there's a site module.
 if not sys.flags.no_site: