tests/float: Convert "sys.exit()" to "raise SystemExit".

The latter is shorter and simpler because it doesn't require importing the
sys module.

tests/float/array_construct.py

@@ -3,9 +3,8 @@
 try:
     from array import array
 except ImportError:
-    import sys
     print("SKIP")
-    sys.exit()
+    raise SystemExit
 
 print(array('f', array('h', [1, 2])))
 print(array('d', array('f', [1, 2])))

tests/float/builtin_float_minmax.py

@@ -3,9 +3,8 @@ try:
     min
     max
 except:
-    import sys
     print("SKIP")
-    sys.exit()
+    raise SystemExit
 
 print(min(0,1.0))
 print(min(1.0,0))

tests/float/bytearray_construct.py

@@ -3,8 +3,7 @@
 try:
     from array import array
 except ImportError:
-    import sys
     print("SKIP")
-    sys.exit()
+    raise SystemExit
 
 print(bytearray(array('f', [1, 2.3])))

tests/float/bytes_construct.py

@@ -3,8 +3,7 @@
 try:
     from array import array
 except ImportError:
-    import sys
     print("SKIP")
-    sys.exit()
+    raise SystemExit
 
 print(bytes(array('f', [1, 2.3])))

tests/float/cmath_fun.py

@@ -4,8 +4,7 @@ try:
     from cmath import *
 except ImportError:
     print("SKIP")
-    import sys
-    sys.exit()
+    raise SystemExit
 
 # make sure these constants exist in cmath
 print("%.5g" % e)

tests/float/cmath_fun_special.py

@@ -5,8 +5,7 @@ try:
     log10
 except (ImportError, NameError):
     print("SKIP")
-    import sys
-    sys.exit()
+    raise SystemExit
 
 test_values_non_zero = []
 base_values = (0.0, 0.5, 1.2345, 10.)

tests/float/float_array.py

@@ -1,9 +1,8 @@
 try:
     from array import array
 except ImportError:
-    import sys
     print("SKIP")
-    sys.exit()
+    raise SystemExit
 
 def test(a):
     print(a)

tests/float/float_struct.py

@@ -5,9 +5,8 @@ try:
     except:
         import struct
 except ImportError:
-    import sys
     print("SKIP")
-    sys.exit()
+    raise SystemExit
 
 i = 1. + 1/2
 # TODO: it looks like '=' format modifier is not yet supported

tests/float/math_fun.py

@@ -4,8 +4,7 @@ try:
     from math import *
 except ImportError:
     print("SKIP")
-    import sys
-    sys.exit()
+    raise SystemExit
 
 test_values = [-100., -1.23456, -1, -0.5, 0.0, 0.5, 1.23456, 100.]
 test_values_small = [-10., -1.23456, -1, -0.5, 0.0, 0.5, 1.23456, 10.] # so we don't overflow 32-bit precision

tests/float/math_fun_bool.py

@@ -4,8 +4,7 @@ try:
     from math import isfinite, isnan, isinf
 except ImportError:
     print("SKIP")
-    import sys
-    sys.exit()
+    raise SystemExit
 
 test_values = [1, 0, -1, 1.0, 0.0, -1.0, float('NaN'), float('Inf'), 
                -float('NaN'), -float('Inf')]

tests/float/math_fun_int.py

@@ -4,8 +4,7 @@ try:
     import math
 except ImportError:
     print("SKIP")
-    import sys
-    sys.exit()
+    raise SystemExit
 
 for fun in (math.ceil, math.floor, math.trunc):
     for x in (-1.6, -0.2, 0, 0.6, 1.4, float('inf'), float('nan')):

tests/float/math_fun_intbig.py

@@ -4,8 +4,7 @@ try:
     import math
 except ImportError:
     print("SKIP")
-    import sys
-    sys.exit()
+    raise SystemExit
 
 for fun in (math.ceil, math.floor, math.trunc):
     for x in (-1e25, 1e25):

tests/float/math_fun_special.py

@@ -5,8 +5,7 @@ try:
     erf
 except (ImportError, NameError):
     print("SKIP")
-    import sys
-    sys.exit()
+    raise SystemExit
 
 test_values = [-8., -2.5, -1, -0.5, 0.0, 0.5, 2.5, 8.,]
 pos_test_values = [0.001, 0.1, 0.5, 1.0, 1.5, 10.,]