python中help(✀print✀)的输出结果什么意思

正常情况下help('print')应该相当于help(str)，显示的是字符串类型的相关信息。
SyntaxError: None不是说没有错误，而是缺少错误的信息，错误的提示信息是None。
你的Python版本有问题吧，help应该是不会提示出错的，建议去官网下一个最新版：www.python.org

>>> help('print')
The ``print`` statement
***********************

print_stmt ::= "print" ([expression ("," expression)* [","]]
| ">>" expression [("," expression)+ [","]])

``print`` evaluates each expression in turn and writes the resulting
object to standard output (see below). If an object is not a string,
it is first converted to a string using the rules for string
conversions. The (resulting or original) string is then written. A
space is written before each object is (converted and) written, unless
the output system believes it is positioned at the beginning of a
line. This is the case (1) when no characters have yet been written
to standard output, (2) when the last character written to standard
output is a whitespace character except ``' '``, or (3) when the last
write operation on standard output was not a ``print`` statement. (In
some cases it may be functional to write an empty string to standard
output for this reason.)

Note: Objects which act like file objects but which are not the built-in
file objects often do not properly emulate this aspect of the file
object's behavior, so it is best not to rely on this.

你的python不是安装的