change some list and dict calls to list and dict literals

CHANGES.rst

@@ -20,7 +20,7 @@ Fixes:
 - Documentation fixes.
   [TomTry]
 
-- Pep 8, UTF 8 headers.
+- Pep 8, UTF 8 headers, dict/list calls to literals.
   [thet]
 
 

src/icalendar/cal.py

@@ -80,8 +80,8 @@ class Component(CaselessDict):
         super(Component, self).__init__(*args, **kwargs)
         # set parameters here for properties that use non-default values
         self.subcomponents = []  # Components can be nested.
-        self.errors = list()  # If we ignored exception(s) while
-                              # parsing a property, contains error strings
+        self.errors = []  # If we ignored exception(s) while
+                          # parsing a property, contains error strings
 
     # def is_compliant(self, name):
     #    """Returns True is the given property name is compliant with the
@@ -553,8 +553,8 @@ class Timezone(Component):
         """convert this VTIMEZONE component to a pytz.timezone object
         """
         zone = str(self['TZID'])
-        transitions = list()
-        dst = dict()
+        transitions = []
+        dst = {}
         for component in self.walk():
             if type(component) == Timezone:
                 continue
@@ -579,7 +579,7 @@ class Timezone(Component):
         # (utcoffset, dstoffset, name)
         # dstoffset = 0, if current transition is to standard time
         #           = this_utcoffset - prev_standard_utcoffset, otherwise
-        transition_info = list()
+        transition_info = []
         for num, (transtime, osfrom, osto, name) in enumerate(transitions):
             dst_offset = False
             if not dst[name]:
@@ -599,10 +599,11 @@ class Timezone(Component):
                             break
             transition_info.append((osto, dst_offset, name))
 
-        cls = type(zone, (DstTzInfo,), dict(
-            zone=zone,
-            _utc_transition_times=transition_times,
-            _transition_info=transition_info))
+        cls = type(zone, (DstTzInfo,), {
+            'zone': zone,
+            '_utc_transition_times': transition_times,
+            '_transition_info': transition_info
+        })
 
         return cls()
 

src/icalendar/prop.py

@@ -276,11 +276,11 @@ class vDDDTypes(object):
         if not isinstance(dt, (datetime, date, timedelta, time)):
             raise ValueError('You must use datetime, date, timedelta or time')
         if isinstance(dt, datetime):
-            self.params = Parameters(dict(value='DATE-TIME'))
+            self.params = Parameters({'value': 'DATE-TIME'})
         elif isinstance(dt, date):
-            self.params = Parameters(dict(value='DATE'))
+            self.params = Parameters({'value': 'DATE'})
         elif isinstance(dt, time):
-            self.params = Parameters(dict(value='TIME'))
+            self.params = Parameters({'value': 'TIME'})
 
         if (isinstance(dt, datetime) or isinstance(dt, time))\
                 and getattr(dt, 'tzinfo', False):
@@ -333,7 +333,7 @@ class vDate(object):
         if not isinstance(dt, date):
             raise ValueError('Value MUST be a date instance')
         self.dt = dt
-        self.params = Parameters(dict(value='DATE'))
+        self.params = Parameters({'value': 'DATE'})
 
     def to_ical(self):
         s = "%04d%02d%02d" % (self.dt.year, self.dt.month, self.dt.day)
@@ -717,7 +717,7 @@ class vTime(object):
             self.dt = args[0]
         else:
             self.dt = time(*args)
-        self.params = Parameters(dict(value='TIME'))
+        self.params = Parameters({'value': 'TIME'})
 
     def to_ical(self):
         return self.dt.strftime("%H%M%S")

src/icalendar/tests/test_timezoned.py

@@ -161,8 +161,8 @@ class TestTimezoneCreation(unittest.TestCase):
         # for reasons (tm) the locally installed version of the time zone
         # database isn't always complete, therefore we only compare some
         # transition times
-        ny_transition_times = list()
-        ny_transition_info = list()
+        ny_transition_times = []
+        ny_transition_info = []
         for num, date in enumerate(pytz_new_york._utc_transition_times):
             if datetime.datetime(1967, 4, 30, 7, 0)\
                     <= date <= datetime.datetime(2037, 11, 1, 6, 0):

src/icalendar/tests/test_unit_caselessdict.py

@@ -41,8 +41,9 @@ class TestCaselessdict(unittest.TestCase):
     def test_caselessdict_canonsort_items(self):
         canonsort_items = icalendar.caselessdict.canonsort_items
 
-        d = dict(i=7, c='at', a=3.5, l=(2, 3), e=[4, 5], n=13, d={'x': 'y'},
-                 r=1.0)
+        d = dict(
+            i=7, c='at', a=3.5, l=(2, 3), e=[4, 5], n=13, d={'x': 'y'}, r=1.0
+        )
 
         out = canonsort_items(d)
         self.assertEqual(

src/icalendar/tests/test_unit_prop.py

@@ -258,7 +258,7 @@ class TestProp(unittest.TestCase):
         # Let's see how close we can get to one from the rfc:
         # FREQ=YEARLY;INTERVAL=2;BYMONTH=1;BYDAY=SU;BYHOUR=8,9;BYMINUTE=30
 
-        r = dict(freq='yearly', interval=2)
+        r = dict({'freq': 'yearly', 'interval': 2})
         r.update({
             'bymonth': 1,
             'byday': 'su',

src/icalendar/timezone_cache.py

@@ -1,3 +1,3 @@
 # -*- coding: utf-8 -*-
 # we save all timezone with TZIDs unknow to the TZDB in here
-_timezone_cache = dict()
+_timezone_cache = {}