python exec statement

The former has been thinking of a problem, that is, how to let the user in the graphical interface input code (input code as a string), as part of the code to run, coincides with the Python crawler video tutorial, saw the use of the Eval function,

The eval (), EXEC () two functions in Python and several functions associated with them, such as Globals (), locals (), and compile ():1. Functions of the Eval function:Evaluates the value of the specified expression. That is, the Python code it

English documents: exec (object[, globals[, locals]]) This function supports dynamic execution of Python Code. object must be either a string or a code Object. If It is a string, the string is

Eval functionfunction of FunctionsEvaluates the string str as a valid expression and returns the result of the calculation. The Python code it executes can only be a single operation expression (which does not support arbitrary assignment operations)

Python provides a description of the built-in functions for calling executable objects, involving exec, Eval, and compile three functions. The EXEC statement is used to execute a python statement stored in a code object, a string, a file, and the

The eval (str [, Globals [, locals]) function evaluates the string str as a valid Python expression and returns the result of the calculation.Similarly, the EXEC statement executes the string str as valid Python code. The namespace of the code

The eval (STR [, globals [, locals]) function evaluates the string 'str' as a valid Python expression and returns the calculation result. Similarly, the exec statement executes the string STR as a valid Python code. The namespace provided to the

This log is reproduced, the original link: http://skandgjxa.blog.163.com/blog/static/1415298201010262403483/eval (str [, Globals [, locals]]) function treats the string str as a valid Python tableTo evaluate the value and return the result of the

Python provides a description of the built-in functions for calling executable objects, involving exec, Eval, and compile three functions. The EXEC statement is used to execute a python statement stored in a code object, a string, a file, and the

EXEC descriptionEXEC executes python statements stored in a string or file, and can execute more complex Python code than eval,exec.return valueThe exec return value is always None.It should be explained that exec is not a function in Python2, but a