diff --git a/scripts/code.py b/scripts/code.py
index 6415015e..8c071b69 100755
--- a/scripts/code.py
+++ b/scripts/code.py
@@ -603,7 +603,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/cov.py b/scripts/cov.py
index 56a39541..9bc35c84 100755
--- a/scripts/cov.py
+++ b/scripts/cov.py
@@ -463,7 +463,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/crc32c.py b/scripts/crc32c.py
index 5ae309f1..6693117f 100755
--- a/scripts/crc32c.py
+++ b/scripts/crc32c.py
@@ -41,7 +41,8 @@ def crc32c(data, crc=0):
 def main(paths, *,
         hex=False,
         string=False):
-    hex_ = hex; del hex
+    import builtins
+    hex_, hex = hex, builtins.hex
 
     # interpret as sequence of hex bytes
     if hex_:
diff --git a/scripts/csv.py b/scripts/csv.py
index 29c0364b..dee8f2aa 100755
--- a/scripts/csv.py
+++ b/scripts/csv.py
@@ -1735,7 +1735,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/ctx.py b/scripts/ctx.py
index 16af2b9d..0f3f3318 100755
--- a/scripts/ctx.py
+++ b/scripts/ctx.py
@@ -863,7 +863,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/data.py b/scripts/data.py
index f3471071..3c9a9316 100755
--- a/scripts/data.py
+++ b/scripts/data.py
@@ -603,7 +603,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/dbgbmap.py b/scripts/dbgbmap.py
index c18a4571..1a7962db 100755
--- a/scripts/dbgbmap.py
+++ b/scripts/dbgbmap.py
@@ -2964,7 +2964,8 @@ class Lfs:
     # lookup operations 
     def lookup(self, mid, mdir=None, *,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # is this mid grmed?
         if not all_ and self.grmed(mid):
@@ -2985,7 +2986,8 @@ class Lfs:
 
     def namelookup(self, did, name, *,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         mid_, mdir_, name_ = self.mtree.namelookup(did, name)
         if mid_ is None:
@@ -3047,7 +3049,8 @@ class Lfs:
             all=False,
             path=False,
             depth=None):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # default to the root directory
         if path_ is None:
@@ -3100,7 +3103,8 @@ class Lfs:
             all=False,
             path=False,
             depth=None):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # default to the root directory
         did = did or self.root.did
@@ -3155,7 +3159,8 @@ class Lfs:
 
     def orphans(self,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # first find all reachable dids
         dids = {self.root.did}
diff --git a/scripts/dbgbmapd3.py b/scripts/dbgbmapd3.py
index ae91cfdf..854258f3 100755
--- a/scripts/dbgbmapd3.py
+++ b/scripts/dbgbmapd3.py
@@ -2994,7 +2994,8 @@ class Lfs:
     # lookup operations 
     def lookup(self, mid, mdir=None, *,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # is this mid grmed?
         if not all_ and self.grmed(mid):
@@ -3015,7 +3016,8 @@ class Lfs:
 
     def namelookup(self, did, name, *,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         mid_, mdir_, name_ = self.mtree.namelookup(did, name)
         if mid_ is None:
@@ -3077,7 +3079,8 @@ class Lfs:
             all=False,
             path=False,
             depth=None):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # default to the root directory
         if path_ is None:
@@ -3130,7 +3133,8 @@ class Lfs:
             all=False,
             path=False,
             depth=None):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # default to the root directory
         did = did or self.root.did
@@ -3185,7 +3189,8 @@ class Lfs:
 
     def orphans(self,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # first find all reachable dids
         dids = {self.root.did}
diff --git a/scripts/dbgerr.py b/scripts/dbgerr.py
index 6195f612..67e355bd 100755
--- a/scripts/dbgerr.py
+++ b/scripts/dbgerr.py
@@ -28,7 +28,8 @@ ERRS = [
 
 def main(errs, *,
         list=False):
-    list_ = list; del list
+    import builtins
+    list_, list = list, builtins.list
 
     lines = []
     # list all known error codes
diff --git a/scripts/dbgflags.py b/scripts/dbgflags.py
index c6641b58..4868954b 100755
--- a/scripts/dbgflags.py
+++ b/scripts/dbgflags.py
@@ -205,8 +205,9 @@ FLAGS = [
 def main(flags, *,
         list=False,
         all=False):
-    list_ = list; del list
-    all_ = all; del all
+    import builtins
+    list_, list = list, builtins.list
+    all_, all = all, builtins.all
 
     # first compile prefixes
     prefixes = {}
diff --git a/scripts/dbgle32.py b/scripts/dbgle32.py
index 4ceacd31..920c4139 100755
--- a/scripts/dbgle32.py
+++ b/scripts/dbgle32.py
@@ -59,7 +59,8 @@ def main(le32s, *,
         hex=False,
         input=None,
         word_bits=32):
-    hex_ = hex; del hex
+    import builtins
+    hex_, hex = hex, builtins.hex
 
     # interpret as a sequence of hex bytes
     if hex_:
diff --git a/scripts/dbgleb128.py b/scripts/dbgleb128.py
index 6652830b..df8d7aaa 100755
--- a/scripts/dbgleb128.py
+++ b/scripts/dbgleb128.py
@@ -71,7 +71,8 @@ def main(leb128s, *,
         hex=False,
         input=None,
         word_bits=32):
-    hex_ = hex; del hex
+    import builtins
+    hex_, hex = hex, builtins.hex
 
     # interpret as a sequence of hex bytes
     if hex_:
diff --git a/scripts/dbglfs.py b/scripts/dbglfs.py
index c8c58320..3cbd0513 100755
--- a/scripts/dbglfs.py
+++ b/scripts/dbglfs.py
@@ -2921,7 +2921,8 @@ class Lfs:
     # lookup operations 
     def lookup(self, mid, mdir=None, *,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # is this mid grmed?
         if not all_ and self.grmed(mid):
@@ -2942,7 +2943,8 @@ class Lfs:
 
     def namelookup(self, did, name, *,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         mid_, mdir_, name_ = self.mtree.namelookup(did, name)
         if mid_ is None:
@@ -3004,7 +3006,8 @@ class Lfs:
             all=False,
             path=False,
             depth=None):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # default to the root directory
         if path_ is None:
@@ -3057,7 +3060,8 @@ class Lfs:
             all=False,
             path=False,
             depth=None):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # default to the root directory
         did = did or self.root.did
@@ -3112,7 +3116,8 @@ class Lfs:
 
     def orphans(self,
             all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # first find all reachable dids
         dids = {self.root.did}
@@ -4142,7 +4147,8 @@ def dbg_files(lfs, paths, *,
         all=False,
         no_orphans=False,
         **args):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     # parse all paths first, error if anything is malformed
     dirs = []
diff --git a/scripts/dbgrbyd.py b/scripts/dbgrbyd.py
index 4c295989..905b0eeb 100755
--- a/scripts/dbgrbyd.py
+++ b/scripts/dbgrbyd.py
@@ -948,7 +948,8 @@ class JumpArt:
 
     @classmethod
     def fromrbyd(cls, rbyd, all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         jumps = []
         j_ = 4
@@ -1100,7 +1101,8 @@ class LifetimeArt:
 
     @classmethod
     def fromrbyd(cls, rbyd, all=False):
-        all_ = all; del all
+        import builtins
+        all_, all = all, builtins.all
 
         # first figure out where each rid comes from
         id = 0
diff --git a/scripts/dbgtag.py b/scripts/dbgtag.py
index 36953d46..cd8402e5 100755
--- a/scripts/dbgtag.py
+++ b/scripts/dbgtag.py
@@ -290,8 +290,9 @@ def main(tags, *,
         hex=False,
         input=None,
         word_bits=32):
-    list_ = list; del list
-    hex_ = hex; del hex
+    import builtins
+    list_, list = list, builtins.list
+    hex_, hex = hex, builtins.hex
 
     # list all known tags
     if list_:
diff --git a/scripts/parity.py b/scripts/parity.py
index 78fd0702..a204231e 100755
--- a/scripts/parity.py
+++ b/scripts/parity.py
@@ -49,7 +49,8 @@ def parity(x):
 def main(paths, *,
         hex=False,
         string=False):
-    hex_ = hex; del hex
+    import builtins
+    hex_, hex = hex, builtins.hex
 
     # interpret as sequence of hex bytes
     if hex_:
diff --git a/scripts/perf.py b/scripts/perf.py
index c0f2c888..51b14316 100755
--- a/scripts/perf.py
+++ b/scripts/perf.py
@@ -964,7 +964,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/perfbd.py b/scripts/perfbd.py
index f6ee35d4..745934b5 100755
--- a/scripts/perfbd.py
+++ b/scripts/perfbd.py
@@ -938,7 +938,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/stack.py b/scripts/stack.py
index b7e03c36..42615423 100755
--- a/scripts/stack.py
+++ b/scripts/stack.py
@@ -606,7 +606,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by
diff --git a/scripts/structs.py b/scripts/structs.py
index 3ceec243..926a1092 100755
--- a/scripts/structs.py
+++ b/scripts/structs.py
@@ -744,7 +744,8 @@ def table(Result, results, diff_results=None, *,
         small_table=False,
         summary=False,
         **_):
-    all_ = all; del all
+    import builtins
+    all_, all = all, builtins.all
 
     if by is None:
         by = Result._by