Turn Warnings into errors (ProjectQ-Framework#159)

damiansteiger · web-flow · commit 93f2546b746b · 2017-09-11T12:05:39.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -48,7 +48,7 @@ install:
   - pip$PY install -e .
 
 # command to run tests
-script: export OMP_NUM_THREADS=1 && pytest projectq --cov projectq
+script: export OMP_NUM_THREADS=1 && pytest -W error projectq --cov projectq
 
 after_success:
   - coveralls
diff --git a/examples/shor.py b/examples/shor.py
@@ -3,7 +3,11 @@
 import math
 import random
 import sys
-from fractions import Fraction, gcd
+from fractions import Fraction
+try:
+    from math import gcd
+except ImportError:
+    from fractions import gcd
 
 from builtins import input
 
diff --git a/projectq/libs/math/_constantmath.py b/projectq/libs/math/_constantmath.py
@@ -11,7 +11,10 @@
 #   limitations under the License.
 
 import math
-from fractions import gcd
+try:
+    from math import gcd
+except ImportError:
+    from fractions import gcd
 
 from projectq.ops import R, X, Swap, Measure, CNOT, QFT
 from projectq.meta import Control, Compute, Uncompute, CustomUncompute, Dagger
