Replace relative imports by absolute imports because pytest

Author: Matthias Koeppe

src/sage/crypto/public_key/blum_goldwasser.py

@@ -31,15 +31,14 @@
 from operator import xor
 
 from sage.arith.misc import GCD as gcd, power_mod, XGCD as xgcd
+from sage.crypto.cryptosystem import PublicKeyCryptosystem
+from sage.crypto.util import is_blum_prime, least_significant_bits, random_blum_prime
 from sage.functions.log import log
 from sage.functions.other import Function_floor
 from sage.monoids.string_monoid import BinaryStrings
 from sage.rings.finite_rings.integer_mod import Mod as mod
 from sage.rings.finite_rings.integer_mod_ring import IntegerModFactory
 
-from ..cryptosystem import PublicKeyCryptosystem
-from ..util import is_blum_prime, least_significant_bits, random_blum_prime
-
 
 floor = Function_floor()
 IntegerModRing = IntegerModFactory("IntegerModRing")

src/sage/crypto/stream.py

@@ -13,15 +13,14 @@
 #*****************************************************************************
 
 from sage.arith.misc import GCD as gcd, power_mod
+from sage.crypto.cryptosystem import SymmetricKeyCryptosystem
+from sage.crypto.stream_cipher import LFSRCipher, ShrinkingGeneratorCipher
+from sage.crypto.util import random_blum_prime
 from sage.monoids.string_monoid import BinaryStrings
 from sage.rings.finite_rings.finite_field_constructor import FiniteField
 from sage.rings.finite_rings.integer_mod_ring import IntegerModFactory
 from sage.rings.polynomial.polynomial_element import Polynomial
 
-from .cryptosystem import SymmetricKeyCryptosystem
-from .stream_cipher import LFSRCipher, ShrinkingGeneratorCipher
-from .util import random_blum_prime
-
 
 IntegerModRing = IntegerModFactory("IntegerModRing")
 

src/sage/dynamics/arithmetic_dynamics/projective_ds.py

@@ -65,6 +65,17 @@ class initialization directly.
 from sage.categories.function_fields import FunctionFields
 from sage.categories.homset import End
 from sage.categories.number_fields import NumberFields
+from sage.dynamics.arithmetic_dynamics.endPN_automorphism_group import (
+    automorphism_group_QQ_CRT,
+    automorphism_group_QQ_fixedpoints,
+    conjugating_set_helper,
+    conjugating_set_initializer,
+    is_conjugate_helper)
+from sage.dynamics.arithmetic_dynamics.endPN_automorphism_group import automorphism_group_FF
+from sage.dynamics.arithmetic_dynamics.generic_ds import DynamicalSystem
+from sage.dynamics.arithmetic_dynamics.projective_ds_helper import (
+    _fast_possible_periods,
+    _all_periodic_points)
 from sage.functions.other import ceil
 from sage.libs.pari.all import PariError
 from sage.matrix.constructor import matrix, identity_matrix
@@ -107,16 +118,6 @@ class initialization directly.
 from sage.structure.element import get_coercion_model
 from sage.symbolic.constants import e
 
-from .endPN_automorphism_group import (
-    automorphism_group_QQ_CRT,
-    automorphism_group_QQ_fixedpoints,
-    conjugating_set_helper,
-    conjugating_set_initializer,
-    is_conjugate_helper)
-from .endPN_automorphism_group import automorphism_group_FF
-from .generic_ds import DynamicalSystem
-from .projective_ds_helper import _fast_possible_periods, _all_periodic_points
-
 
 class DynamicalSystem_projective(SchemeMorphism_polynomial_projective_space,
                                       DynamicalSystem):

src/sage/quadratic_forms/quadratic_form__equivalence_testing.py

@@ -12,11 +12,10 @@
                              legendre_symbol,
                              prime_divisors,
                              valuation)
+from sage.quadratic_forms.quadratic_form import is_QuadraticForm
 from sage.rings.integer_ring import ZZ
 from sage.rings.rational_field import QQ
 
-from .quadratic_form import is_QuadraticForm
-
 
 ##############################################################################
 # Routines to test if two quadratic forms over ZZ are globally equivalent.   #

src/sage/quadratic_forms/quadratic_form__mass__Conway_Sloane_masses.py

@@ -7,12 +7,11 @@
                              legendre_symbol,
                              prime_divisors)
 from sage.misc.misc_c import prod
+from sage.quadratic_forms.special_values import gamma__exact, zeta__exact, quadratic_L_function__exact
 from sage.rings.integer_ring import ZZ
 from sage.rings.rational_field import QQ
 from sage.symbolic.constants import pi
 
-from .special_values import gamma__exact, zeta__exact, quadratic_L_function__exact
-
 
 def parity(self, allow_rescaling_flag=True):
     """

src/sage/quadratic_forms/quadratic_form__mass__Siegel_densities.py

@@ -18,13 +18,12 @@
 from sage.misc.functional import squarefree_part
 from sage.misc.misc_c import prod
 from sage.misc.mrange import mrange
+from sage.quadratic_forms.special_values import gamma__exact, zeta__exact, quadratic_L_function__exact
 from sage.rings.finite_rings.integer_mod_ring import IntegerModRing
 from sage.rings.integer_ring import ZZ
 from sage.rings.rational_field import QQ
 from sage.symbolic.constants import pi
 
-from .special_values import gamma__exact, zeta__exact, quadratic_L_function__exact
-
 
 def mass__by_Siegel_densities(self, odd_algorithm="Pall", even_algorithm="Watson"):
     """

src/sage/quadratic_forms/quadratic_form__siegel_product.py

@@ -16,11 +16,10 @@
                              prime_divisors)
 from sage.misc.functional import sqrt
 from sage.misc.verbose import verbose
+from sage.quadratic_forms.special_values import QuadraticBernoulliNumber
 from sage.rings.integer_ring import ZZ
 from sage.rings.rational_field import QQ
 
-from .special_values import QuadraticBernoulliNumber
-
 
 #/*!  \brief Computes the product of all local densities for comparison with independently computed Eisenstein coefficients.
 # *

src/sage/quadratic_forms/quadratic_form__ternary_Tornaria.py

@@ -22,10 +22,9 @@
 from sage.misc.misc_c import prod
 from sage.modules.free_module import FreeModule
 from sage.modules.free_module_element import vector
+from sage.quadratic_forms.quadratic_form import QuadraticForm__constructor as QuadraticForm
 from sage.rings.integer_ring import ZZ
 
-from .quadratic_form import QuadraticForm__constructor as QuadraticForm
-
 
 # TO DO -- Add second argument
 #  def __call__(self,v,w=None):

src/sage/quadratic_forms/ternary_qf.py

@@ -29,23 +29,23 @@
 from sage.arith.misc import GCD as gcd, kronecker as kronecker_symbol
 from sage.matrix.constructor import matrix, identity_matrix
 from sage.misc.prandom import randint
+from sage.quadratic_forms.quadratic_form import QuadraticForm
+from sage.quadratic_forms..ternary import (_basic_lemma,
+                                           _find_a_ternary_qf_by_level_disc,
+                                           _find_all_ternary_qf_by_level_disc,
+                                           _find_p_neighbor_from_vec,
+                                           _find_zeros_mod_p_2,
+                                           _find_zeros_mod_p_odd,
+                                           _reduced_ternary_form_eisenstein_with_matrix,
+                                           _reduced_ternary_form_eisenstein_without_matrix)
+
 from sage.rings.finite_rings.integer_mod import mod
 from sage.rings.integer_ring import ZZ
 from sage.rings.polynomial.polynomial_ring import polygens
 from sage.rings.ring import is_Ring
 from sage.structure.element import is_Vector, is_Matrix
 from sage.structure.sage_object import SageObject
 
-from .quadratic_form import QuadraticForm
-from .ternary import (_basic_lemma,
-                      _find_a_ternary_qf_by_level_disc,
-                      _find_all_ternary_qf_by_level_disc,
-                      _find_p_neighbor_from_vec,
-                      _find_zeros_mod_p_2,
-                      _find_zeros_mod_p_odd,
-                      _reduced_ternary_form_eisenstein_with_matrix,
-                      _reduced_ternary_form_eisenstein_without_matrix)
-
 
 class TernaryQF(SageObject):
     """