Home>Article>Backend Development> Basic knowledge of python syntax
1. Numeric types and operations
1. Integer types
can be positive or negative, with no limit on the value range
pow（x，y）：计算x^y
2. Floating point number type
There is an uncertain mantissa
round(x,d)：对x四舍五入，d为小数截取位数
e/E：a*10^b
3. Complex number type
z=a+bj z.real=a z.imag=b
2. Numerical operation operator
eg：x//y :整数除 10//3=3 x%y :求模 10%3=1 x**y=x^y
3. Numerical operation function
abs(x) :绝对值 abs(-10)=10 divmod(x,y) :商余 divmod(10,3)=(3,1) pow(x,y,z) :幂余，（x**y）%z max(x1,x2,...xn) :求最大值 min(x1,x2,...xn) :求最小值 int(x) ：将x变成整数 float(x) :将x变成浮点数 comlex(x) :将x变成浮点数
4. Representation of string type(consisting of a pair of single quotes or An ordered sequence of characters represented by double quotes)
f7e83be87db5cd2d9a8a0b8117b38cd4[M:N:K], slice the string according to the step size K
Special characters: "\b ": Go back "\n": Line feed (the cursor moves to the beginning of the next line) "\r": Carriage return (the cursor moves to the beginning of this line)
5. String processing function
len(x): length str(x): string form corresponding to any type x
chr(x): x is Unicode encoding, return its corresponding character ord (x) : On the contrary
Recommended tutorial:python tutorial
The above is the detailed content of Basic knowledge of python syntax. For more information, please follow other related articles on the PHP Chinese website!