# Create an array with random values values = array.array('i', [-40, 58, -69, -84, 51, 76, -12, 36]) # Make a new array with the absolute values absValues = array.array('i', [abs(value) for value in values]) #
长整型(long integers)- 不限大小的整数,整数最后是一个大写或小写的L。 浮点型(floating point real values)- 浮点型由整数部分与小数部分组成,浮点型也可以使用科学计数法表示(2.5e2 = 2.5 x 102 = 250) 复数(complex numbers)- 复数由实数部分和虚数部分构成,可以用a + bj,或者complex(a,b)表示,复数的...
print ('arctan: abs(x) should be <= 1.') exit(78) if x < 0 : print ('arctan: input must be >= 0.') exit(77) # Only non-negative values in this implementation. sum = x x_sq = x*x divisor = 3 last_dividend = x multiplier = -1 getcontext().prec += 2 # extra dig...
store floating-point values can vary across machines, and Python only prints a decimal approximation to the true decimal value of the binary approximation stored by the machine. On most machines, if Python were to print the true decimal value of the binary approximation stored for 0.1, it would...
1/10 is not exactly representable as a binary fraction. Since at least 2000, almost all machines use IEEE 754 binary floating-point arithmetic, and almost all platforms map Python floats to IEEE 754 binary64 “double precision” values. IEEE 754 binary64 values contain 53 bits of precision, ...
Specifies which converter the C engine should use for floating-point values. The options are None for the ordinary converter, high for the high-precision converter, and round_trip for the round-trip converter. 指定 lineterminator: str (length 1), default None ...
浮点型(floating point real values) - 浮点型由整数部分与小数部分组成,浮点型也可以使用科学计数法表示(2.5e2 = 2.5 x 102 = 250) 复数(complex numbers) - 复数由实数部分和虚数部分构成,可以用a + bj,或者complex(a,b)表示, 复数的实部a和虚部b都是浮点型。
values(): print(value, end=' ') # 1 2 3 4 4.for-else循环 for 迭代变量 in 可迭代对象: 代码块 else: 代码块 当for循环正常执行完的情况下,执行else输出,如果for循环中执行了跳出循环的语句,比如 break,将不执行else代码块的内容,与while - else语句一样。 【例子】 for num in range(10, 20)...
浮点型(floating point real values) - 浮点型由整数部分与小数部分组成,浮点型也可以使用科学计数法表示(2.5e2 = 2.5 x 102 = 250) 复数(complex numbers) - 复数由实数部分和虚数部分构成,可以用a + bj,或者complex(a,b)表示, 复数的实部a和虚部b都是浮点型。int...
（双精度为第13-64位，共52位，算上隐含的1.xxx，共有53位精度）Floating Point Components 参见IEEE...