python print invalid syntax

Question

print (n+1) ": x1= ",x1,"f(x)= ",fx

I want it to print what the x1 is and the value of the function at x1 (fx), but I get an invalid syntax on the end of the first quotation. Can someone explain to me what my problem is.

Answer 1

这是你想要做的（假设所有都是整数）：

print("%d: x1= %d f(x)=%d" % ((n+1),x1,fx))

Answer 2

你在n + 1之后错过了一个逗号

print (n+1), " : x1=",x1,"f(x)=",fx 

Answer 3

The problems are

1. There should be a comma(,) before the 1st quotation.

   print (n+1), " : x1=",x1,"f(x)=",fx

2. printing f(x) will print correct value if you have a return statement in the function