init.py, pdbrc.py: fix flake8 warnings

diff --git a/lib/python/init.py b/lib/python/init.py
index 44aebe49725066875ba2aa146f619a3e973f7c02..363a10a1e6d0aaf8ceb66e64dda3296d44f0dc3b 100644 (file)
--- a/lib/python/init.py
+++ b/lib/python/init.py
@@ -4,15 +4,20 @@
 # into your .profile (use whatever syntax and initialization file
 # is appropriate for your shell):
 #
-# PYTHONSTARTUP=$HOME/init.py # or where you really put it
+# PYTHONSTARTUP=$HOME/init.py  # or where you really put it
 # export PYTHONSTARTUP
 
+
 def init():
-    import sys, os
     import __builtin__
+    import os
+    import sys
+
+    # readline/pyreadline
 
-    pyreadlinew32_startup = os.path.join(sys.prefix,
-        'lib', 'site-packages', 'pyreadline', 'configuration', 'startup.py')
+    pyreadlinew32_startup = os.path.join(
+        sys.prefix, 'lib', 'site-packages',
+        'pyreadline', 'configuration', 'startup.py')
 
     if os.path.exists(pyreadlinew32_startup):
         execfile(pyreadlinew32_startup)
@@ -22,19 +27,20 @@ def init():
         # https://mail.python.org/pipermail/python-list/2001-March/062888.html
 
         try:
-            import rlcompleter, readline
-            initfile = os.environ.get('INPUTRC') or os.path.expanduser('~/.inputrc')
+            import readline
+            initfile = os.environ.get('INPUTRC') \
+                or os.path.expanduser('~/.inputrc')
             readline.read_init_file(initfile)
 
             histfile = os.path.expanduser('~/.python-history')
             try:
                 readline.read_history_file(histfile)
             except IOError:
-                pass # No such file
+                pass  # No such file
 
             def savehist():
-                histfilesize = os.environ.get('HISTFILESIZE') or \
-                               os.environ.get('HISTSIZE')
+                histfilesize = os.environ.get('HISTFILESIZE') \
+                    or os.environ.get('HISTSIZE')
                 if histfilesize:
                     try:
                         histfilesize = int(histfilesize)
@@ -48,9 +54,11 @@ def init():
             atexit.register(savehist)
 
         except (ImportError, AttributeError):
-            pass # no readline or atexit, or readline doesn't have
-                 # {read,write}_history_file - ignore the error
+            # no readline or atexit, or readline doesn't have
+            # {read,write}_history_file - ignore the error
+            pass
 
+    # terminal
 
     term = os.environ.get('TERM', '')
     if 'linux' in term:
@@ -66,20 +74,20 @@ def init():
             continue
 
         if background == 'dark':
-            ps1_color = '3' # yellow
-            stdout_color = '7' # bold white
+            ps1_color = '3'  # yellow
+            stdout_color = '7'  # bold white
         else:
-            ps1_color = '4' # blue
-            stdout_color = '0' # bold black
+            ps1_color = '4'  # blue
+            stdout_color = '0'  # bold black
 
         sys.ps1 = '\001\033[3%sm\002>>>\001\033[0m\002 ' % ps1_color
-        sys.ps2 = '\001\033[1;32m\002...\001\033[0m\002 ' # bold green
-
+        sys.ps2 = '\001\033[1;32m\002...\001\033[0m\002 '  # bold green
 
         # From Denis Otkidach
 
         class ColoredFile:
-            def __init__(self, fp, begin, end='\033[0m'): # reset all attributes
+            def __init__(self, fp, begin,
+                         end='\033[0m'):  # reset all attributes
                 self.__fp = fp
                 self.__begin = begin
                 self.__end = end
@@ -94,14 +102,14 @@ def init():
                 return getattr(self.__fp, attr)
 
         sys.stdout = ColoredFile(sys.stdout, '\033[1;3%sm' % stdout_color)
-        sys.stderr = ColoredFile(sys.stderr, '\033[31m') # red
+        sys.stderr = ColoredFile(sys.stderr, '\033[31m')  # red
 
         break
 
     try:
         import locale
     except ImportError:
-        pass # locale was not compiled
+        pass  # locale was not compiled
     else:
         try:
             locale.setlocale(locale.LC_ALL, '')
@@ -116,8 +124,9 @@ def init():
             sys.displayhook = displayhook
 
         except (ImportError, locale.Error):
-            pass # no locale support or unsupported locale
+            pass  # no locale support or unsupported locale
 
+    # utilities
 
     # From: Paul Magwene:
     # https://mail.python.org/pipermail/python-list/2001-March/086191.html
@@ -157,14 +166,13 @@ def init():
     # From Thomas Heller:
     # https://mail.python.org/pipermail/python-list/2001-April/099020.html
 
-    # From Thomas Heller
-    #
-    #import pdb
+    # import pdb
     #
-    #def info(*args):
-    #   pdb.pm()
-    #sys.excepthook = info
+    # def info(*args):
+    #    pdb.pm()
+    # sys.excepthook = info
 
+    # print working directory
 
     class Pwd:
         def __repr__(self):
@@ -175,6 +183,7 @@ def init():
 
     __builtin__.pwd = Pwd()
 
+    # exit REPL with 'exit', 'quit' or simple 'x'
 
     class _Exit:
         def __repr__(self):
@@ -185,9 +194,11 @@ def init():
 
     __builtin__.x = _Exit()
 
-    if isinstance(__builtin__.exit, str): # In Python 2.5+ exit and quit are objects
-        __builtin__.exit = __builtin__.quit = x
+    # In Python 2.5+ exit and quit are objects
+    if isinstance(__builtin__.exit, str):
+        __builtin__.exit = __builtin__.quit = x  # noqa: x is defined as _Exit
 
+    # print conten of a file
 
     class _Cat:
         def __repr__(self):
@@ -201,6 +212,7 @@ def init():
 
     __builtin__.cat = _Cat()
 
+    # call shell
 
     class _Sh:
         def __repr__(self):
@@ -212,6 +224,7 @@ def init():
 
     __builtin__.sh = _Sh()
 
+    # paginate a file
 
     class _Pager:
         def __repr__(self):
@@ -223,13 +236,15 @@ def init():
 
     __builtin__.pager = _Pager()
 
+    # edit a file
 
     class _Editor:
         def __repr__(self):
             return "Usage: edit('filename')"
 
         def __call__(self, filename):
-            editor = os.environ.get("VISUAL") or os.environ.get("EDITOR") or 'vi'
+            editor = os.environ.get("VISUAL") \
+                or os.environ.get("EDITOR") or 'vi'
             os.system("%s '%s'" % (editor, filename.replace("'", '"\'"')))
 
     __builtin__.edit = __builtin__.editor = _Editor()

diff --git a/lib/python/pdbrc.py b/lib/python/pdbrc.py
index 0e67e51600fa4938211700f7adac173afc1e3a1a..0ebe7b513e5cf2cb8b4e0ee738e927ae148111ff 100644 (file)
--- a/lib/python/pdbrc.py
+++ b/lib/python/pdbrc.py
@@ -1,5 +1,9 @@
+import atexit
+import os
+import sys
+import readline
+
 # Command line history:
-import os, readline
 histfile = os.path.expanduser("~/.pdb-history")
 
 try:
@@ -7,10 +11,13 @@ try:
 except IOError:
     pass
 
+
 def savehist(histfile=histfile):
-    import os, readline
-    histfilesize = os.environ.get('HISTFILESIZE') or \
-                   os.environ.get('HISTSIZE')
+    import os
+    import readline
+
+    histfilesize = os.environ.get('HISTFILESIZE') \
+        or os.environ.get('HISTSIZE')
     if histfilesize:
         try:
             histfilesize = int(histfilesize)
@@ -20,22 +27,27 @@ def savehist(histfile=histfile):
             readline.set_history_length(histfilesize)
     readline.write_history_file(histfile)
 
-import atexit
 atexit.register(savehist)
 
-# return to debugger after fatal exception (Python cookbook 14.5):
-import sys
+
 def info(type, value, tb):
+    # return to debugger after fatal exception (Python cookbook 14.5):
+    import pdb
+    import sys
+    import traceback
+
     if hasattr(sys, 'ps1') or not sys.stderr.isatty():
         sys.__excepthook__(type, value, tb)
-    import traceback, pdb
     traceback.print_exception(type, value, tb)
     print
     pdb.pm()
+
 sys.excepthook = info
 
+
 # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/498182
-import pdb, rlcompleter
+import pdb
+import rlcompleter
 pdb.Pdb.complete = rlcompleter.Completer().complete
 
 # Cleanup any variables that could otherwise clutter up the namespace.