Python string to list eval

I have a string, something like this: "[[.Cheese. 72], [.Milk. 45], [.Bread. If you insist on doing it this way, you can use the ast.literal_eval function. I have a string that looks identical to a list, let.s say. This is accomplished a little more safely using eval(frtstring,{__builtins__:None},{}). 17 Apr 2009 [Tutor] list to string and string to list newlist = eval(mystr) >>> eval has all sorts of security implications so I wouldn.t recommend >>> it where.

Is there an easy way to convert a string that contains a list to a list the string to eval, the return value should be the list contained within the string. Python would be a poor programming language unless you could be sure. Is there an easy way to convert a string that contains a list to a list The Python function.eval. will evaluate a given string as a Python.

Short answer - use eval(). Long answer - *don.t* use eval unless you are in control of the source of the string that you are evaluating. -- Cheers. 31 Mar 2006 Converts object x to an expression string. eval(str). Evaluates a string and returns an object. tuple(s). Converts s to a tuple. list(s). Converts s to.

Convert String to List in Python Without Using

6 Jun 2012 Python has an eval() function which evaluates a string of Python code: or in other words, a list of all the classes that have been instantiated to. Most list features work on strings as well. The next The eval() function takes a string and returns data of the type that python thinks it found. For example.

Using eval() safely in python - Lybniz - SourceForge

When compiling a string with multi-line code in.single. or.eval. mode, input must a Python expression (technically speaking, a condition list) using the globals. 17 Jan 2012 Note - in earlier versions of Tcl, the eval command was the recommended alternative and it remains available today. [4454] Everything is a string - even a list - (2015-03-11). Collections in Python - list tuple dict and string. Python module imports. from math import pow from numpy import ndarray from return eval(string) def gui_to_float(string): """Convert the GUI obtained string to an float. @type string: str or unicode @return: The integer or list of integers.

Sage: libgap.eval(.1/0.) Traceback (most recent call last): ValueError: Return whether the wrapped GAP object is a GAP List. py_name – a python string. The eval function lets a python program run python code within itself. In Lybniz a list of safe functions is made, and used to filter the existing namespace. #!.

If eval(equation): Again, the return value is a list, and each item in the list is a string that All the unique items in the original list, without any duplicates.

String_conv.py

If the user on the other hand inputs a list, the function will return a list. Let.s have a look at print("So, you are are already " + str(age) + " years old, " + name + "!") We save the To to this we can use either a casting function or the eval function. Python provides several ways to interact with the interpreter from within a program. For example, the eval function evaluates a string as if it were a Python. Python Variable Types - Learning Python in simple and easy steps: A method for each of them. Python has five standard data types -. Numbers. String. List. eval(str). Evaluates a string and returns an object. tuple(s). Converts s to a tuple.