字符串运算符

a="Hello" b="Python" print("a+b输出结果：",a+b) print("a*2输出结果:",a*2) print("a[1]输出结果：",a[1]) print("a[1:4]输出结果:",a[1:4]) if('H' in a): print("H在变量a中") else: print("H不在变量a中") if('M' not in a): print('M不在变量a中') else: print('M在变量a中') print(r'\n') print(R'\n')

Python 的字符串内建函数