Support for Python3

[Anonymous]

Hi,
I wrote a patch for the python interface to support Python3.
It seems to work both on python3.3 and 2.7.

Best,
Amato

diff --git python/geographiclib/geodesic.py python/geographiclib/geodesic.py
index 1b6509e..a6ad9c1 100644
--- python/geographiclib/geodesic.py
+++ python/geographiclib/geodesic.py
@@ -65,9 +65,9 @@ class Geodesic(object):
   nA3_ = GEOGRAPHICLIB_GEODESIC_ORDER
   nA3x_ = nA3_
   nC3_ = GEOGRAPHICLIB_GEODESIC_ORDER
-  nC3x_ = (nC3_ * (nC3_ - 1)) / 2
+  nC3x_ = (nC3_ * (nC3_ - 1)) // 2
   nC4_ = GEOGRAPHICLIB_GEODESIC_ORDER
-  nC4x_ = (nC4_ * (nC4_ + 1)) / 2
+  nC4x_ = (nC4_ * (nC4_ + 1)) // 2
   maxit1_ = 20
   maxit2_= maxit1_ + Math.digits + 10

@@ -270,9 +270,9 @@ class Geodesic(object):
       raise ValueError("Major radius is not positive")
     if not(Math.isfinite(self._b) and self._b > 0):
       raise ValueError("Minor radius is not positive")
-    self._A3x = range(Geodesic.nA3x_)
-    self._C3x = range(Geodesic.nC3x_)
-    self._C4x = range(Geodesic.nC4x_)
+    self._A3x = list(range(Geodesic.nA3x_))
+    self._C3x = list(range(Geodesic.nC3x_))
+    self._C4x = list(range(Geodesic.nC4x_))
     self.A3coeff()
     self.C3coeff()
     self.C4coeff()
@@ -683,9 +683,9 @@ class Geodesic(object):

     # real a12, sig12, calp1, salp1, calp2, salp2
     # index zero elements of these arrays are unused
-    C1a = range(Geodesic.nC1_ + 1)
-    C2a = range(Geodesic.nC2_ + 1)
-    C3a = range(Geodesic.nC3_)
+    C1a = list(range(Geodesic.nC1_ + 1))
+    C2a = list(range(Geodesic.nC2_ + 1))
+    C3a = list(range(Geodesic.nC3_))

     meridian = lat1 == -90 or slam12 == 0

@@ -857,7 +857,7 @@ class Geodesic(object):
         A4 = Math.sq(self._a) * calp0 * salp0 * self._e2
         ssig1, csig1 = Geodesic.SinCosNorm(ssig1, csig1)
         ssig2, csig2 = Geodesic.SinCosNorm(ssig2, csig2)
-        C4a = range(Geodesic.nC4_)
+        C4a = list(range(Geodesic.nC4_))
         self.C4f(eps, C4a)
         B41 = Geodesic.SinCosSeries(False, ssig1, csig1, C4a, Geodesic.nC4_)
         B42 = Geodesic.SinCosSeries(False, ssig2, csig2, C4a, Geodesic.nC4_)
diff --git python/geographiclib/geodesicline.py python/geographiclib/geodesicline.py
index 37cc345..662bc63 100644
--- python/geographiclib/geodesicline.py
+++ python/geographiclib/geodesicline.py
@@ -80,7 +80,7 @@ class GeodesicLine(object):

     if self._caps & Geodesic.CAP_C1:
       self._A1m1 = Geodesic.A1m1f(eps)
-      self._C1a = range(Geodesic.nC1_ + 1)
+      self._C1a = list(range(Geodesic.nC1_ + 1))
       Geodesic.C1f(eps, self._C1a)
       self._B11 = Geodesic.SinCosSeries(
         True, self._ssig1, self._csig1, self._C1a, Geodesic.nC1_)
@@ -92,25 +92,25 @@ class GeodesicLine(object):
       #    _B11 = -SinCosSeries(true, _stau1, _ctau1, _C1pa, nC1p_)

     if self._caps & Geodesic.CAP_C1p:
-      self._C1pa = range(Geodesic.nC1p_ + 1)
+      self._C1pa = list(range(Geodesic.nC1p_ + 1))
       Geodesic.C1pf(eps, self._C1pa)

     if self._caps & Geodesic.CAP_C2:
       self._A2m1 = Geodesic.A2m1f(eps)
-      self._C2a = range(Geodesic.nC2_ + 1)
+      self._C2a = list(range(Geodesic.nC2_ + 1))
       Geodesic.C2f(eps, self._C2a)
       self._B21 = Geodesic.SinCosSeries(
         True, self._ssig1, self._csig1, self._C2a, Geodesic.nC2_)

     if self._caps & Geodesic.CAP_C3:
-      self._C3a = range(Geodesic.nC3_)
+      self._C3a = list(range(Geodesic.nC3_))
       geod.C3f(eps, self._C3a)
       self._A3c = -self._f * self._salp0 * geod.A3f(eps)
       self._B31 = Geodesic.SinCosSeries(
         True, self._ssig1, self._csig1, self._C3a, Geodesic.nC3_-1)

     if self._caps & Geodesic.CAP_C4:
-      self._C4a = range(Geodesic.nC4_)
+      self._C4a = list(range(Geodesic.nC4_))
       geod.C4f(eps, self._C4a)
       # Multiplier = a^2 * e^2 * cos(alpha0) * sin(alpha0)
       self._A4 = Math.sq(self._a) * self._calp0 * self._salp0 * geod._e2

[Charles Karney]

Thanks. I'll incorporate this patch into the next release
of GeographicLib.
--Charles

[Charles Karney]

This fix is included in GeographicLib version 1.31.