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float1.py
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119 lines (100 loc) · 2.08 KB
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# test basic float capabilities
# literals
print(.12)
print(1.)
print(1.2)
print(0e0)
print(0e+0)
print(0e-0)
# float construction
print(float(1.2))
print(float("1.2"))
print(float("+1"))
print(float("1e1"))
print(float("1e+1"))
print(float("1e-1"))
print(float("inf"))
print(float("-inf"))
print(float("INF"))
print(float("infinity"))
print(float("INFINITY"))
print(float("nan"))
print(float("-nan"))
print(float("NaN"))
try:
float("")
except ValueError:
print("ValueError")
try:
float("1e+")
except ValueError:
print("ValueError")
try:
float("1z")
except ValueError:
print("ValueError")
# construct from something with the buffer protocol
print(float(b"1.2"))
print(float(bytearray(b"3.4")))
# unary operators
print(bool(0.0))
print(bool(1.2))
print(+(1.2))
print(-(1.2))
# division of integers
x = 1 / 2
print(x)
# /= operator
a = 1
a /= 2
print(a)
# floor division
print(1.0 // 2)
print(2.0 // 2)
# comparison
print(1.2 <= 3.4)
print(1.2 <= -3.4)
print(1.2 >= 3.4)
print(1.2 >= -3.4)
# comparison of nan is special
nan = float('nan')
print(nan == 1.2)
print(nan == nan)
try:
1.0 / 0
except ZeroDivisionError:
print("ZeroDivisionError")
try:
1.0 // 0
except ZeroDivisionError:
print("ZeroDivisionError")
try:
1.2 % 0
except ZeroDivisionError:
print("ZeroDivisionError")
try:
0.0 ** -1
except ZeroDivisionError:
print("ZeroDivisionError")
# unsupported unary ops
try:
~1.2
except TypeError:
print("TypeError")
try:
1.2 in 3.4
except TypeError:
print("TypeError")
# small int on LHS, float on RHS, unsupported op
try:
print(1 | 1.0)
except TypeError:
print('TypeError')
# can't convert list to float
try:
float([])
except TypeError:
print("TypeError")
# test constant float with more than 255 chars
x = 1.84728699436059052516398251149631771898472869943605905251639825114963177189847286994360590525163982511496317718984728699436059052516398251149631771898472869943605905251639825114963177189847286994360590525163982511496317718984728699436059052516398251149631771898472869943605905251639825114963177189
print("%.5f" % x)