git grep -l -E ' (Q as QQ|Z as ZZ)' | xargs sed -i.bak 's/ Q as QQ/ QQ/;s/ Z as ZZ/ ZZ/;'

Author: Matthias Koeppe

src/sage/coding/code_bounds.py

@@ -174,9 +174,9 @@
 # ****************************************************************************
 
 from sage.libs.gap.libgap import libgap
-from sage.rings.rational_field import Q as QQ
+from sage.rings.rational_field import QQ
 from sage.rings.real_mpfr import RR
-from sage.rings.integer_ring import Z as ZZ
+from sage.rings.integer_ring import ZZ
 from sage.rings.real_double import RDF
 from sage.arith.misc import is_prime_power
 from sage.arith.misc import binomial

src/sage/coding/information_set_decoder.py

@@ -40,7 +40,7 @@
 #                  http://www.gnu.org/licenses/
 #******************************************************************************
 
-from sage.rings.integer_ring import Z as ZZ
+from sage.rings.integer_ring import ZZ
 from sage.rings.integer import Integer
 from sage.modules.free_module_element import free_module_element as vector
 from sage.structure.sage_object import SageObject

src/sage/groups/perm_gps/permgroup.py

@@ -141,7 +141,7 @@
 from sage.misc.randstate import current_randstate
 from sage.groups.group import FiniteGroup
 
-from sage.rings.rational_field import Q as QQ
+from sage.rings.rational_field import QQ
 from sage.rings.integer import Integer
 from sage.interfaces.abc import ExpectElement, GapElement
 from sage.libs.gap.libgap import libgap