number = 10 print(str(number)) # "10" list_example = [1, 2, 3] print(str(list_example)) # "[1, 2, 3]" int() - 转换为整数 int() 函数用于将数字字符串或浮点数转换为整数。如果字符串无法转换为整数,会抛出 ValueError。 float_number = 123.45 print(int(float_number)) # 123 str_...
For example, complex('1+2j') is fine, but complex('1 + 2j') raises ValueError. 说明: 1. 函数功能,返回一个复数。有两个可选参数。 2. 当两个参数都不提供时,返回复数 0j。 >>> complex() 0j 3. 当第一个参数为字符串时,调用时不能提供第二个参数。此时字符串参数,需是一个能表示复数...
5.42is a floating-point number. Complex numbers are written in the form,x + yj, wherexis the real part andyis the imaginary part. We can use thetype()function to know which class avariableor a value belongs to. Let's see an example, num1 =5print(num1,'is of type', type(num1)...
z = 1j# complex To verify the type of any object in Python, use thetype()function: Example print(type(x)) print(type(y)) print(type(z)) Try it Yourself » Int Int, or integer, is a whole number, positive or negative, without decimals, of unlimited length. ...
When converting from a string, the string must not contain whitespace around the central+or-operator. For example,complex('1+2j')is fine, butcomplex('1+2j')raisesValueError. 说明: 1. 函数功能,返回一个复数。有两个可选参数。 2. 当两个参数都不提供时,返回复数 0j。
as the power. For example, 4.3E-3 is 4.3 times 10 to the -3 power. Floating-point numbers more than 15 digits in the calculation of the error is related to the computer's internal use of binary arithmetic, using floating-point numbers can not be carried out very high speed number ...
复数(complex): 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。 我们也可以使用十六进制和八进制代表整数: 代码语言:javascript 复制 >>>number=0xA0F# 十六进制>>>number2575>>>number=0o37# 八进制>>>number31 ...
In this example, the argument to type() may look like an expression. However, it’s a literal of a complex number in Python. If you pass the literal to the type() function, then you’ll get the complex type back.Note: To dive deeper into complex numbers, check out the Simplify ...
When converting from a string, the string must not contain whitespace around the central+or-operator. For example,complex('1+2j')is fine, butcomplex('1+2j')raisesValueError. The complex type is described inNumeric Types — int, float, complex. ...
When converting from a string, the string must not contain whitespace around the central + or - operator. For example, complex('1+2j') is fine, but complex('1 + 2j') raises ValueError. 说明: 函数功能,返回一个复数。有两个可选参数。