diff --git a/2.7/_bisect.pyi b/2.7/_bisect.pyi
index 09ff91bf1..4a18158ab 100644
--- a/2.7/_bisect.pyi
+++ b/2.7/_bisect.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def bisect(a, x, *args, **kwargs) -> int: ...
 
diff --git a/2.7/_codecs.pyi b/2.7/_codecs.pyi
index 428ddc8ab..80b45f12d 100644
--- a/2.7/_codecs.pyi
+++ b/2.7/_codecs.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def ascii_decode(a, *args, **kwargs) -> tuple: ...
 
diff --git a/2.7/_collections.pyi b/2.7/_collections.pyi
index df1ae2198..75bd1a76a 100644
--- a/2.7/_collections.pyi
+++ b/2.7/_collections.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 class defaultdict(object):
     def __copy__() -> object: ...
diff --git a/2.7/_functools.pyi b/2.7/_functools.pyi
index 08a015a3b..9b026b31e 100644
--- a/2.7/_functools.pyi
+++ b/2.7/_functools.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def reduce(*args, **kwargs) -> object:
     raise TypeError()
diff --git a/2.7/_heapq.pyi b/2.7/_heapq.pyi
index 6c4a71a36..a975f1278 100644
--- a/2.7/_heapq.pyi
+++ b/2.7/_heapq.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def heapify(*args, **kwargs) -> None:
     raise TypeError()
diff --git a/2.7/_hotshot.pyi b/2.7/_hotshot.pyi
index f4eaf0df2..adeecf2a8 100644
--- a/2.7/_hotshot.pyi
+++ b/2.7/_hotshot.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def coverage(a: str) -> object: ...
 
diff --git a/2.7/_json.pyi b/2.7/_json.pyi
index 8f08945c3..c007bca9a 100644
--- a/2.7/_json.pyi
+++ b/2.7/_json.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def encode_basestring_ascii(*args, **kwargs) -> str:
     raise TypeError()
diff --git a/2.7/_random.pyi b/2.7/_random.pyi
index b585046a6..3892c7415 100644
--- a/2.7/_random.pyi
+++ b/2.7/_random.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 class Random(object):
     def getrandbits(a: int) -> object:
diff --git a/2.7/_sre.pyi b/2.7/_sre.pyi
index abc48199b..07521d459 100644
--- a/2.7/_sre.pyi
+++ b/2.7/_sre.pyi
@@ -3,12 +3,12 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
-CODESIZE = Undefined(int)
-MAGIC = Undefined(int)
-MAXREPEAT = Undefined(long)
-copyright = Undefined(str)
+CODESIZE = ...  # type: int
+MAGIC = ...  # type: int
+MAXREPEAT = ...  # type: long
+copyright = ...  # type: str
 
 def compile(a, b: int, c, *args, **kwargs) -> SRE_Pattern:
     raise OverflowError()
diff --git a/2.7/_struct.pyi b/2.7/_struct.pyi
index 3df0705fc..3ee50221e 100644
--- a/2.7/_struct.pyi
+++ b/2.7/_struct.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def _clearcache() -> None: ...
 
diff --git a/2.7/array.pyi b/2.7/array.pyi
index 7e195d2de..26b24122c 100644
--- a/2.7/array.pyi
+++ b/2.7/array.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 class array(object):
     def __copy__() -> object: ...
diff --git a/2.7/cStringIO.pyi b/2.7/cStringIO.pyi
index 0603bb1f5..815453bf2 100644
--- a/2.7/cStringIO.pyi
+++ b/2.7/cStringIO.pyi
@@ -3,11 +3,11 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
-InputType = Undefined(StringI)
-OutputType = Undefined(StringO)
-cStringIO_CAPI = Undefined(object)
+InputType = ...  # type: StringI
+OutputType = ...  # type: StringO
+cStringIO_CAPI = ...  # type: object
 
 def StringIO(*args, **kwargs) -> object: ...
 
diff --git a/2.7/cmath.pyi b/2.7/cmath.pyi
index 59ba3688e..5eacac574 100644
--- a/2.7/cmath.pyi
+++ b/2.7/cmath.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def acos(*args, **kwargs) -> complex: ...
 
diff --git a/2.7/datetime.pyi b/2.7/datetime.pyi
index fe72cdbf2..b76e6e6de 100644
--- a/2.7/datetime.pyi
+++ b/2.7/datetime.pyi
@@ -3,11 +3,11 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
-max = Undefined(object)
-min = Undefined(object)
-resolution = Undefined(object)
+max = ...  # type: object
+min = ...  # type: object
+resolution = ...  # type: object
 
 class date(object):
     def __format__(a) -> unicode:
diff --git a/2.7/gc.pyi b/2.7/gc.pyi
index 67b297a74..823845081 100644
--- a/2.7/gc.pyi
+++ b/2.7/gc.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def collect(*args, **kwargs) -> int:
     raise ValueError()
diff --git a/2.7/math.pyi b/2.7/math.pyi
index 298860807..8bba54540 100644
--- a/2.7/math.pyi
+++ b/2.7/math.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def acos(*args, **kwargs) -> float: ...
 
diff --git a/2.7/operator.pyi b/2.7/operator.pyi
index f26357f26..145db8cc9 100644
--- a/2.7/operator.pyi
+++ b/2.7/operator.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def __abs__(*args, **kwargs) -> object: ...
 
diff --git a/2.7/signal.pyi b/2.7/signal.pyi
index a06cf4db8..3b226808a 100644
--- a/2.7/signal.pyi
+++ b/2.7/signal.pyi
@@ -3,50 +3,50 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
-ITIMER_PROF = Undefined(long)
-ITIMER_REAL = Undefined(long)
-ITIMER_VIRTUAL = Undefined(long)
-ItimerError = Undefined(object)
-NSIG = Undefined(int)
-SIGABRT = Undefined(int)
-SIGALRM = Undefined(int)
-SIGBUS = Undefined(int)
-SIGCHLD = Undefined(int)
-SIGCLD = Undefined(int)
-SIGCONT = Undefined(int)
-SIGFPE = Undefined(int)
-SIGHUP = Undefined(int)
-SIGILL = Undefined(int)
-SIGINT = Undefined(int)
-SIGIO = Undefined(int)
-SIGIOT = Undefined(int)
-SIGKILL = Undefined(int)
-SIGPIPE = Undefined(int)
-SIGPOLL = Undefined(int)
-SIGPROF = Undefined(int)
-SIGPWR = Undefined(int)
-SIGQUIT = Undefined(int)
-SIGRTMAX = Undefined(int)
-SIGRTMIN = Undefined(int)
-SIGSEGV = Undefined(int)
-SIGSTOP = Undefined(int)
-SIGSYS = Undefined(int)
-SIGTERM = Undefined(int)
-SIGTRAP = Undefined(int)
-SIGTSTP = Undefined(int)
-SIGTTIN = Undefined(int)
-SIGTTOU = Undefined(int)
-SIGURG = Undefined(int)
-SIGUSR1 = Undefined(int)
-SIGUSR2 = Undefined(int)
-SIGVTALRM = Undefined(int)
-SIGWINCH = Undefined(int)
-SIGXCPU = Undefined(int)
-SIGXFSZ = Undefined(int)
-SIG_DFL = Undefined(long)
-SIG_IGN = Undefined(long)
+ITIMER_PROF = ...  # type: long
+ITIMER_REAL = ...  # type: long
+ITIMER_VIRTUAL = ...  # type: long
+ItimerError = ...  # type: object
+NSIG = ...  # type: int
+SIGABRT = ...  # type: int
+SIGALRM = ...  # type: int
+SIGBUS = ...  # type: int
+SIGCHLD = ...  # type: int
+SIGCLD = ...  # type: int
+SIGCONT = ...  # type: int
+SIGFPE = ...  # type: int
+SIGHUP = ...  # type: int
+SIGILL = ...  # type: int
+SIGINT = ...  # type: int
+SIGIO = ...  # type: int
+SIGIOT = ...  # type: int
+SIGKILL = ...  # type: int
+SIGPIPE = ...  # type: int
+SIGPOLL = ...  # type: int
+SIGPROF = ...  # type: int
+SIGPWR = ...  # type: int
+SIGQUIT = ...  # type: int
+SIGRTMAX = ...  # type: int
+SIGRTMIN = ...  # type: int
+SIGSEGV = ...  # type: int
+SIGSTOP = ...  # type: int
+SIGSYS = ...  # type: int
+SIGTERM = ...  # type: int
+SIGTRAP = ...  # type: int
+SIGTSTP = ...  # type: int
+SIGTTIN = ...  # type: int
+SIGTTOU = ...  # type: int
+SIGURG = ...  # type: int
+SIGUSR1 = ...  # type: int
+SIGUSR2 = ...  # type: int
+SIGVTALRM = ...  # type: int
+SIGWINCH = ...  # type: int
+SIGXCPU = ...  # type: int
+SIGXFSZ = ...  # type: int
+SIG_DFL = ...  # type: long
+SIG_IGN = ...  # type: long
 
 def alarm(a: int) -> int: ...
 
diff --git a/2.7/strop.pyi b/2.7/strop.pyi
index db34afece..6b072a94f 100644
--- a/2.7/strop.pyi
+++ b/2.7/strop.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def atof(a: str) -> float:
     raise DeprecationWarning()
diff --git a/2.7/thread.pyi b/2.7/thread.pyi
index ee0bc6182..07f54d8c9 100644
--- a/2.7/thread.pyi
+++ b/2.7/thread.pyi
@@ -3,10 +3,10 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
-LockType = Undefined(lock)
-error = Undefined(object)
+LockType = ...  # type: lock
+error = ...  # type: object
 
 def _count() -> int: ...
 
diff --git a/2.7/time.pyi b/2.7/time.pyi
index 75b986995..16e1d466b 100644
--- a/2.7/time.pyi
+++ b/2.7/time.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def asctime(*args, **kwargs) -> str:
     raise ValueError()
diff --git a/2.7/xxsubtype.pyi b/2.7/xxsubtype.pyi
index b94d3a334..41852e74d 100644
--- a/2.7/xxsubtype.pyi
+++ b/2.7/xxsubtype.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def bench(a, b: str, *args, **kwargs) -> float: ...
 
diff --git a/2.7/zipimport.pyi b/2.7/zipimport.pyi
index 6e899b3b7..e6bca8e99 100644
--- a/2.7/zipimport.pyi
+++ b/2.7/zipimport.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 class zipimporter(object):
     def find_module(a: str, *args, **kwargs) -> None: ...
diff --git a/2.7/zlib.pyi b/2.7/zlib.pyi
index 4617cf2ff..a89772047 100644
--- a/2.7/zlib.pyi
+++ b/2.7/zlib.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def adler32(a, *args, **kwargs) -> int: ...
 
diff --git a/3/_bisect.pyi b/3/_bisect.pyi
index 90b1f3fb4..ce6577953 100644
--- a/3/_bisect.pyi
+++ b/3/_bisect.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def bisect(a, x, *args, **kwargs) -> long: ...
 
diff --git a/3/_codecs.pyi b/3/_codecs.pyi
index 71fd3e59c..18106a7da 100644
--- a/3/_codecs.pyi
+++ b/3/_codecs.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def _forget_codec(a: str) -> None: ...
 
diff --git a/3/_heapq.pyi b/3/_heapq.pyi
index 6c4a71a36..a975f1278 100644
--- a/3/_heapq.pyi
+++ b/3/_heapq.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def heapify(*args, **kwargs) -> None:
     raise TypeError()
diff --git a/3/_json.pyi b/3/_json.pyi
index 3059a0083..2593a331d 100644
--- a/3/_json.pyi
+++ b/3/_json.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def encode_basestring_ascii(*args, **kwargs) -> object:
     raise TypeError()
diff --git a/3/_operator.pyi b/3/_operator.pyi
index 32551740a..695a149f1 100644
--- a/3/_operator.pyi
+++ b/3/_operator.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def _compare_digest(a, b) -> bool:
     raise BufferError()
diff --git a/3/_stat.pyi b/3/_stat.pyi
index ea070b5ac..f861a2889 100644
--- a/3/_stat.pyi
+++ b/3/_stat.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def S_IFMT(*args, **kwargs) -> long: ...
 
diff --git a/3/_tracemalloc.pyi b/3/_tracemalloc.pyi
index f5498cdef..e323719e6 100644
--- a/3/_tracemalloc.pyi
+++ b/3/_tracemalloc.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def _get_object_traceback(*args, **kwargs) -> object: ...
 
diff --git a/3/_warnings.pyi b/3/_warnings.pyi
index cc563b77b..d558e68ae 100644
--- a/3/_warnings.pyi
+++ b/3/_warnings.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def _filters_mutated() -> None: ...
 
diff --git a/3/atexit.pyi b/3/atexit.pyi
index 5c1a98a2f..f690dcc93 100644
--- a/3/atexit.pyi
+++ b/3/atexit.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def _clear() -> None: ...
 
diff --git a/3/cmath.pyi b/3/cmath.pyi
index 553e67132..0319ee61f 100644
--- a/3/cmath.pyi
+++ b/3/cmath.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def acos(*args, **kwargs) -> complex: ...
 
diff --git a/3/marshal.pyi b/3/marshal.pyi
index 6601568c0..9d2bdfe1f 100644
--- a/3/marshal.pyi
+++ b/3/marshal.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def dump(a, b, *args, **kwargs) -> object: ...
 
diff --git a/3/math.pyi b/3/math.pyi
index 449e612b8..21da14ae5 100644
--- a/3/math.pyi
+++ b/3/math.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def acos(*args, **kwargs) -> object: ...
 
diff --git a/3/signal.pyi b/3/signal.pyi
index 0a5b57110..9e80401b9 100644
--- a/3/signal.pyi
+++ b/3/signal.pyi
@@ -3,50 +3,50 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
-ITIMER_PROF = Undefined(long)
-ITIMER_REAL = Undefined(long)
-ITIMER_VIRTUAL = Undefined(long)
-ItimerError = Undefined(object)
-NSIG = Undefined(long)
-SIGABRT = Undefined(long)
-SIGALRM = Undefined(long)
-SIGBUS = Undefined(long)
-SIGCHLD = Undefined(long)
-SIGCLD = Undefined(long)
-SIGCONT = Undefined(long)
-SIGFPE = Undefined(long)
-SIGHUP = Undefined(long)
-SIGILL = Undefined(long)
-SIGINT = Undefined(long)
-SIGIO = Undefined(long)
-SIGIOT = Undefined(long)
-SIGKILL = Undefined(long)
-SIGPIPE = Undefined(long)
-SIGPOLL = Undefined(long)
-SIGPROF = Undefined(long)
-SIGPWR = Undefined(long)
-SIGQUIT = Undefined(long)
-SIGRTMAX = Undefined(long)
-SIGRTMIN = Undefined(long)
-SIGSEGV = Undefined(long)
-SIGSTOP = Undefined(long)
-SIGSYS = Undefined(long)
-SIGTERM = Undefined(long)
-SIGTRAP = Undefined(long)
-SIGTSTP = Undefined(long)
-SIGTTIN = Undefined(long)
-SIGTTOU = Undefined(long)
-SIGURG = Undefined(long)
-SIGUSR1 = Undefined(long)
-SIGUSR2 = Undefined(long)
-SIGVTALRM = Undefined(long)
-SIGWINCH = Undefined(long)
-SIGXCPU = Undefined(long)
-SIGXFSZ = Undefined(long)
-SIG_DFL = Undefined(long)
-SIG_IGN = Undefined(long)
+ITIMER_PROF = ...  # type: long
+ITIMER_REAL = ...  # type: long
+ITIMER_VIRTUAL = ...  # type: long
+ItimerError = ...  # type: object
+NSIG = ...  # type: long
+SIGABRT = ...  # type: long
+SIGALRM = ...  # type: long
+SIGBUS = ...  # type: long
+SIGCHLD = ...  # type: long
+SIGCLD = ...  # type: long
+SIGCONT = ...  # type: long
+SIGFPE = ...  # type: long
+SIGHUP = ...  # type: long
+SIGILL = ...  # type: long
+SIGINT = ...  # type: long
+SIGIO = ...  # type: long
+SIGIOT = ...  # type: long
+SIGKILL = ...  # type: long
+SIGPIPE = ...  # type: long
+SIGPOLL = ...  # type: long
+SIGPROF = ...  # type: long
+SIGPWR = ...  # type: long
+SIGQUIT = ...  # type: long
+SIGRTMAX = ...  # type: long
+SIGRTMIN = ...  # type: long
+SIGSEGV = ...  # type: long
+SIGSTOP = ...  # type: long
+SIGSYS = ...  # type: long
+SIGTERM = ...  # type: long
+SIGTRAP = ...  # type: long
+SIGTSTP = ...  # type: long
+SIGTTIN = ...  # type: long
+SIGTTOU = ...  # type: long
+SIGURG = ...  # type: long
+SIGUSR1 = ...  # type: long
+SIGUSR2 = ...  # type: long
+SIGVTALRM = ...  # type: long
+SIGWINCH = ...  # type: long
+SIGXCPU = ...  # type: long
+SIGXFSZ = ...  # type: long
+SIG_DFL = ...  # type: long
+SIG_IGN = ...  # type: long
 
 def alarm(a: int) -> long: ...
 
diff --git a/3/time.pyi b/3/time.pyi
index cec5000c3..bc5e6a211 100644
--- a/3/time.pyi
+++ b/3/time.pyi
@@ -3,7 +3,7 @@
 # for a more precise manual annotation of this module.
 # Feel free to edit the source below, but remove this header when you do.
 
-from typing import List, Tuple, Dict, Undefined, GenericType
+from typing import List, Tuple, Dict, GenericType
 
 def asctime(*args, **kwargs) -> unicode: ...