Make expression legal python by adding '1'.

Doc/library/functions.rst

@@ -248,7 +248,7 @@ are always available.  They are listed here in alphabetical order.
 
 .. class:: complex([real[, imag]])
 
-   Return a complex number with the value *real* + *imag*\*j or convert a string
+   Return a complex number with the value *real* + *imag*\*1j or convert a string
    or number to a complex number.  If the first parameter is a string, it will
    be interpreted as a complex number and the function must be called without a
    second parameter.  The second parameter can never be a string. Each argument