tests/float/float1.py · sam/circuitpython

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circuitpython

tests

float

float1.py

float1.py 2.08 KB

# 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)

一键复制编辑原始数据按行查看历史

Damien George 提交于 2017年11月21日 12:01 +08:00 . py/objfloat: Allow float() to parse anything with the buffer protocol.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119

# 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)