Trac #21010: py3 imports in calculus, game_theory, stats, sandpiles f…

…olders (futurize)

another step to py3

done using
{{{
futurize -w -f absolute_import src/sage/stats/
futurize -w -f absolute_import src/sage/sandpiles/
futurize -w -f absolute_import src/sage/game_theory/
futurize -w -f absolute_import src/sage/calculus/
}}}

URL: https://trac.sagemath.org/21010
Reported by: chapoton
Ticket author(s): Frédéric Chapoton
Reviewer(s): Jori Mäntysalo

src/sage/calculus/functional.py

@@ -29,8 +29,9 @@
     sage: inverse_laplace( e^a/(a-1), x, a)
     ilt(e^a/(a - 1), x, a)
 """
+from __future__ import absolute_import
 
-from calculus import SR
+from .calculus import SR
 from sage.symbolic.expression import Expression
 
 def simplify(f):

src/sage/calculus/functions.py

@@ -1,11 +1,12 @@
 r"""
 Calculus functions.
 """
+from __future__ import absolute_import
 from sage.matrix.all import matrix
 from sage.matrix.matrix import is_Matrix
 from sage.structure.element import is_Vector
 from sage.symbolic.ring import is_SymbolicVariable
-from functional import diff
+from .functional import diff
 
 
 def wronskian(*args):

src/sage/game_theory/catalog.py

@@ -1,5 +1,6 @@
 r"""
 Catalog Of Games
 """
+from __future__ import absolute_import
 
-import catalog_normal_form_games as normal_form_games
+from . import catalog_normal_form_games as normal_form_games

src/sage/game_theory/normal_form_game.py

@@ -603,10 +603,11 @@
 #                  http://www.gnu.org/licenses/
 #*****************************************************************************
 from __future__ import print_function
+from __future__ import absolute_import
 
 from collections import MutableMapping
 from itertools import product
-from parser import Parser
+from .parser import Parser
 from sage.misc.latex import latex
 from sage.misc.misc import powerset
 from sage.rings.all import QQ

src/sage/sandpiles/__init__.py

@@ -1 +1,2 @@
-import all
+from __future__ import absolute_import
+from . import all

src/sage/sandpiles/all.py

@@ -1,6 +1,7 @@
+from __future__ import absolute_import
 from sage.misc.lazy_import import lazy_import
 
-from sandpile import Sandpile, SandpileDivisor, SandpileConfig, firing_graph, parallel_firing_graph, wilmes_algorithm, random_tree, random_digraph, random_DAG, triangle_sandpile
+from .sandpile import Sandpile, SandpileDivisor, SandpileConfig, firing_graph, parallel_firing_graph, wilmes_algorithm, random_tree, random_digraph, random_DAG, triangle_sandpile
 
 lazy_import('sage.sandpiles.examples', 'sandpiles')
 

src/sage/stats/__init__.py

@@ -1 +1,2 @@
-import all
+from __future__ import absolute_import
+from . import all

src/sage/stats/all.py

@@ -1,9 +1,11 @@
-from r import (ttest)
-from basic_stats import (mean, mode, std, variance, median, moving_average)
+from __future__ import absolute_import
 
-import hmm.all as hmm
+from .r import ttest
+from .basic_stats import (mean, mode, std, variance, median, moving_average)
+from .hmm import all as hmm
 
-# We lazy_import the following modules since they import numpy which slows down sage startup
+# We lazy_import the following modules since they import numpy which
+# slows down sage startup
 from sage.misc.lazy_import import lazy_import
 lazy_import("sage.finance.time_series", ["TimeSeries"])
-lazy_import("sage.stats.intlist",["IntList"])
+lazy_import("sage.stats.intlist", ["IntList"])

src/sage/stats/distributions/__init__.py

@@ -1,2 +1,3 @@
-import discrete_gaussian_integer
-import discrete_gaussian_polynomial
+from __future__ import absolute_import
+from . import discrete_gaussian_integer
+from . import discrete_gaussian_polynomial

src/sage/stats/distributions/discrete_gaussian_lattice.py

@@ -22,6 +22,7 @@
   ((3, 0, -5, 0, -1, -3, 3, 3, -7, 2), (4, 0, 1, -2, -4, -4, 4, 0, 1, -4), (-3, 0, 4, 5, 0, 1, 3, 2, 0, -1))
 
 """
+from __future__ import absolute_import
 #******************************************************************************
 #
 #                        DGS - Discrete Gaussian Samplers
@@ -57,7 +58,7 @@
 from sage.functions.log import exp
 from sage.functions.other import ceil
 from sage.rings.all import RealField, RR, ZZ, QQ
-from discrete_gaussian_integer import DiscreteGaussianDistributionIntegerSampler
+from .discrete_gaussian_integer import DiscreteGaussianDistributionIntegerSampler
 from sage.structure.sage_object import SageObject
 from sage.matrix.constructor import matrix, identity_matrix
 from sage.modules.free_module import FreeModule

src/sage/stats/distributions/discrete_gaussian_polynomial.py

@@ -21,6 +21,7 @@
     (23.83..., 24.0...)
 
 """
+from __future__ import absolute_import
 #******************************************************************************
 #
 #                        DGS - Discrete Gaussian Samplers
@@ -54,7 +55,7 @@
 #*****************************************************************************/
 
 from sage.rings.all import RealField, RR, ZZ
-from discrete_gaussian_integer import DiscreteGaussianDistributionIntegerSampler
+from .discrete_gaussian_integer import DiscreteGaussianDistributionIntegerSampler
 from sage.structure.sage_object import SageObject
 
 class DiscreteGaussianDistributionPolynomialSampler(SageObject):

src/sage/stats/hmm/__init__.py

@@ -1 +1,2 @@
-import all
+from __future__ import absolute_import
+from . import all