Patch #101121, by Ka-Ping Yee: cosmetic cleanup of cgi.py, using my

style conventions.  (Ping has checkin privileges but apparently
ignores them at the moment.)

Ping improves a few doc strings and fixes style violations like foo ( bar ).

An addition of my own: rearrange the printing of various items in
test() so that the (long) environment comes at the end.  This avoids
having to scroll if you want to see the current directory or command
line arguments.

Lib/cgi.py

@@ -19,7 +19,7 @@ written in Python.
 # responsible for its maintenance.
 # 
 
-__version__ = "2.3"
+__version__ = "2.4"
 
 
 # Imports
@@ -718,7 +718,7 @@ class FieldStorage:
 # ===============================
 
 class FormContentDict(UserDict.UserDict):
-    """Basic (multiple values per field) form content as dictionary.
+    """Form content as dictionary with a list of values per field.
 
     form = FormContentDict()
 
@@ -736,11 +736,11 @@ class FormContentDict(UserDict.UserDict):
 
 
 class SvFormContentDict(FormContentDict):
-    """Strict single-value expecting form content as dictionary.
+    """Form content as dictionary expecting a single value per field.
 
-    IF you only expect a single value for each field, then form[key]
+    If you only expect a single value for each field, then form[key]
     will return that single value.  It will raise an IndexError if
-    that expectation is not true.  IF you expect a field to have
+    that expectation is not true.  If you expect a field to have
     possible multiple values, than you can use form.getlist(key) to
     get all of the values.  values() and items() are a compromise:
     they return single strings where there is a single value, and
@@ -754,47 +754,47 @@ class SvFormContentDict(FormContentDict):
     def getlist(self, key):
         return self.dict[key]
     def values(self):
-        lis = []
-        for each in self.dict.values(): 
-            if len( each ) == 1 : 
-                lis.append(each[0])
-            else: lis.append(each)
-        return lis
+        result = []
+        for value in self.dict.values():
+            if len(value) == 1:
+                result.append(value[0])
+            else: result.append(value)
+        return result
     def items(self):
-        lis = []
-        for key,value in self.dict.items():
-            if len(value) == 1 :
-                lis.append((key, value[0]))
-            else:       lis.append((key, value))
-        return lis
+        result = []
+        for key, value in self.dict.items():
+            if len(value) == 1:
+                result.append((key, value[0]))
+            else: result.append((key, value))
+        return result
 
 
 class InterpFormContentDict(SvFormContentDict):
     """This class is present for backwards compatibility only.""" 
-    def __getitem__( self, key ):
-        v = SvFormContentDict.__getitem__( self, key )
-        if v[0] in string.digits+'+-.' : 
-            try:  return  string.atoi( v ) 
+    def __getitem__(self, key):
+        v = SvFormContentDict.__getitem__(self, key)
+        if v[0] in string.digits + '+-.':
+            try: return string.atoi(v)
             except ValueError:
-                try:    return string.atof( v )
+                try: return string.atof(v)
                 except ValueError: pass
         return string.strip(v)
-    def values( self ):
-        lis = [] 
+    def values(self):
+        result = []
         for key in self.keys():
             try:
-                lis.append( self[key] )
+                result.append(self[key])
             except IndexError:
-                lis.append( self.dict[key] )
-        return lis
-    def items( self ):
-        lis = [] 
+                result.append(self.dict[key])
+        return result
+    def items(self):
+        result = []
         for key in self.keys():
             try:
-                lis.append( (key, self[key]) )
+                result.append((key, self[key]))
             except IndexError:
-                lis.append( (key, self.dict[key]) )
-        return lis
+                result.append((key, self.dict[key]))
+        return result
 
 
 class FormContent(FormContentDict):
@@ -804,7 +804,7 @@ class FormContent(FormContentDict):
         else: return None
     def indexed_value(self, key, location):
         if self.dict.has_key(key):
-            if len (self.dict[key]) > location:
+            if len(self.dict[key]) > location:
                 return self.dict[key][location]
             else: return None
         else: return None
@@ -836,10 +836,10 @@ def test(environ=os.environ):
     sys.stderr = sys.stdout
     try:
         form = FieldStorage()   # Replace with other classes to test those
-        print_form(form)
-        print_environ(environ)
         print_directory()
         print_arguments()
+        print_form(form)
+        print_environ(environ)
         print_environ_usage()
         def f():
             exec "testing print_exception() -- <I>italics?</I>"
@@ -856,10 +856,10 @@ def test(environ=os.environ):
     maxlen = 50
     try:
         form = FieldStorage()   # Replace with other classes to test those
-        print_form(form)
-        print_environ(environ)
         print_directory()
         print_arguments()
+        print_form(form)
+        print_environ(environ)
     except:
         print_exception()