Signature: np.around(a, decimals=0, out=None) Docstring: Evenly round to the given number of decimals. 翻译就是:a表示需要保留小数位数的数组或数字,decimals表示要保留的小数位数 In [138]: np.around(3.124, 2) Out[138]: 3.12 In [139]: np.around(3.125, 2) Out[139]: 3.12 In [140]:...
) print("www", "baidu", "com", sep="/") 执行以上代码,输出结果为: wwwbaiducom www.baidu.com www/baidu/com 6. 数字类型 Python 中存在四种不同的数字(Number)类型,整数(int)、浮点数(float)、布尔类型(bool)和复数(complex)。 6.1 整数(int) 整数(int)是完整的数字,正数或负数,没有小数,长度...
print(type(z)) Try it Yourself » Int Int, or integer, is a whole number, positive or negative, without decimals, of unlimited length. Example Integers: x =1 y =35656222554887711 z =-3255522 print(type(x)) print(type(y)) print(type(z)) ...
importmath#圆周率#Output: 3.141592653589793print(math.pi)#余弦#Output: -1.0print(math.cos(math.pi))#指数#Output: 22026.465794806718print(math.exp(10))#对数#Output: 3.0print(math.log10(1000))#反正弦#Output: 1.1752011936438014print(math.sinh(1))#阶乘#Output: 720print(math.factorial(6)) random模...
Try typing the largest number you can think of into IDLE’s interactive window. Python can handle it with no problem!Floating-Point NumbersA floating-point number, or float for short, is a number with a decimal place. 1.0 is a floating-point number, as is -2.75. The name of the ...
sys.getsizeof(number_1),'bytes')print('the size of 999 is:',sys.getsizeof(number_999),'bytes')print('the size of big number is:',sys.getsizeof(number_big),'bytes')# 输出结果为:the size of0is:24bytesthe size of1is:28bytesthe size of999is:28bytesthe size of big numberis:...
>>> print(bin(-42), bin(42), sep="\n ") -0b101010 0b101010 更改数字的符号不会影响 Python 中的底层位串。相反,在将位串转换为十进制形式时,允许在位串前加上减号: >>> >>> int("-101010", 2) -42 这在Python 中是有意义的,因为在内部,它不使用符号位。您可以将 Python 中整数的符号...
If the separator is not found, return S and two empty strings. """ pass 1. 2. 3. 4. 5. 6. 7. 8. 9. #!/usr/bin/python str = "http:///" print str.partition("://") 输出结果为: ('http', '://', '/') 1. 2. 3. 4. 5. 6. 7. def replace(self, old, new, ...
num1 = int(2.3)print(num1)# prints 2num2 = int(-2.8)print(num2)# prints -2num3 = float(5)print(num3)# prints 5.0num4 = complex('3+5j')print(num4)# prints (3 + 5j) Run Code Here, when converting from float to integer, the number gets truncated (decimal parts are removed...
import decimal #Can be rounded to 13.48 or 13.49 rounded = round(13.485, 2) print(rounded) Let’s see the output for this program: The number in program can be rounded to 13.48 or 13.49. By default, theround(...)function rounds down. This can be changed as well: ...