String fix and a bunch of PEP8 issues I had collected in the meanwhile.

release/scripts/op/console_shell.py

@@ -25,19 +25,21 @@ import bpy
 
 language_id = 'shell'
 
+
 def add_scrollback(text, text_type):
     for l in text.split('\n'):
         bpy.ops.console.scrollback_append(text=l.replace('\t', '    '),
             type=text_type)
 
+
 def shell_run(text):
     import subprocess
-    val, output= subprocess.getstatusoutput(text)
+    val, output = subprocess.getstatusoutput(text)
 
     if not val:
-        style= 'OUTPUT'
+        style = 'OUTPUT'
     else:
-        style= 'ERROR'
+        style = 'ERROR'
 
     add_scrollback(output, style)
 
@@ -60,7 +62,7 @@ def execute(context):
     bpy.ops.console.history_append(text="", current_character=0,
         remove_duplicates=True)
 
-    sc.prompt = os.getcwd()+PROMPT
+    sc.prompt = os.getcwd() + PROMPT
     return ('FINISHED',)
 
 
@@ -74,7 +76,6 @@ def banner(context):
     sc = context.space_data
 
     shell_run("bash --version")
-    sc.prompt = os.getcwd()+PROMPT
+    sc.prompt = os.getcwd() + PROMPT
 
     return ('FINISHED',)
-