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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 An introduction to the project-k FORTH kernel
project-k is a very small FORTH programming language kernel supporting Javascript and Python open-sourced on GitHub https
Step1:  Python standard function dir(obj) gets all member names of an object. Lest's see what are in the FORTH kernel vm
Step2:  I only want you to see that there are very few properties and methods in this FORTH kernel object and many of them are conventional FORTH tokens like code, endcode, comma, compiling, dictionary, here, last, stack, pop, push, tos, rpop, rstack, rtos, tib, ntib, tick, and words. 
Now let's play
The property vm.stack is the FORTH data stack which is empty at first.
Step3:  vm.dictate() method is the way project-k VM receives your commands (a string). It actually is also the way we feed it an entire FORTH source code file. Everything given to vm.dictate() is like a command line you type to the FORTH system as simple as only a number
Step4:  The first line above dictates project-k VM to push 123 onto the data stack and the second line views the data stack. We can even cascade these two lines into one
Step5:  because vm.dictate() returns the vm object itself.
project-k VM knows only two words 'code' and 'end-code' at first
Let's define a FORTH command (or 'word') that prints "Hello World!!"
Step6:  Did you know what have we done? We defined a new FORTH code word! By the way, we can use any character in a word name except white spaces. This is a FORTH convention. 
Define the 'words' command to view all words
I'd like to see what are all the words we have so far. The FORTH command 'words' is what we want now but this tiny FORTH system does not have it yet. We have to define it
Step7:  In the above definition the vm.words is a python dictionary (not FORTH dictionary) defined in the project-k VM object as a property which is something like an array of all recent words in the recent vocabulary named forth which is the only one vocabulary comes with the FORTH kernel. Where a FORTH 'vocabulary' is simply a key in python dictionary key
Step8:  This example demonstrates how to use built-in methods push(), pop(), nexttoken() and the stack property (or global variable). As shown in above definitions, we can omit vm. so vm.push, vm.stack are simplified to push, stack because code ... end-code definitions are right in the VM name space. Now let's try these new words
Step9:  The + command can certainly concatenate strings together and also can add numbers because Python's + operator works that way. Please try it with integers and floating point numbers
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Python Code:
# In case you are not familiar with Jupyter Notebook, click here and press Ctrl+Enter to run this cell.
import projectk as vm
vm
Explanation: An introduction to the project-k FORTH kernel
project-k is a very small FORTH programming language kernel supporting Javascript and Python open-sourced on GitHub https://github.com/hcchengithub/project-k. We are going to use this FORTH kernel to build our own tiny FORTH programming language system. 
Read only
Read this tutorial on GitHub https://github.com/hcchengithub/project-k/blob/master/notebooks/tutor.ipynb
How to play
Use an online Jupyter Notebook, I recommend notebooks.ai while Google colab, Microsoft Azure Notebooks, and more are available out there, you don't need to install anything. Click [Download Zip] form GitHub project-k. We only need this notebook, notebooks\tutor.ipynb, and project-k source code file for Python, projectk.py that has only 20k bytes includes a lot of comments. Choose an online Jupyter notebook you like, create an acount, upload the minimum two files, double click or run this notebook tutor.ipynb and start playing.
<img src="projectk.jpg"> 
Import the FORTH kernel
The python statement below imports projectk.py and gives it an arbitrary nick name vm. As shown below we can see that vm is a python module and it is an instance of projectk.py which is our FORTH kernel.
End of explanation
print(dir(vm))
Explanation: Python standard function dir(obj) gets all member names of an object. Lest's see what are in the FORTH kernel vm:
End of explanation
vm.stack
Explanation: I only want you to see that there are very few properties and methods in this FORTH kernel object and many of them are conventional FORTH tokens like code, endcode, comma, compiling, dictionary, here, last, stack, pop, push, tos, rpop, rstack, rtos, tib, ntib, tick, and words. 
Now let's play
The property vm.stack is the FORTH data stack which is empty at first.
End of explanation
vm.dictate("123")
vm.stack
Explanation: vm.dictate() method is the way project-k VM receives your commands (a string). It actually is also the way we feed it an entire FORTH source code file. Everything given to vm.dictate() is like a command line you type to the FORTH system as simple as only a number:
End of explanation
vm.dictate("456").stack
Explanation: The first line above dictates project-k VM to push 123 onto the data stack and the second line views the data stack. We can even cascade these two lines into one:
End of explanation
vm.dictate("code hi! print('Hello World!!') end-code");  # define the "hi!" comamnd where print() is a standard python function
vm.dictate("hi!");
Explanation: because vm.dictate() returns the vm object itself.
project-k VM knows only two words 'code' and 'end-code' at first
Let's define a FORTH command (or 'word') that prints "Hello World!!":
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vm.dictate("code words print([w.name for w in vm.words['forth'][1:]]) end-code")
vm.dictate("words");
Explanation: Did you know what have we done? We defined a new FORTH code word! By the way, we can use any character in a word name except white spaces. This is a FORTH convention. 
Define the 'words' command to view all words
I'd like to see what are all the words we have so far. The FORTH command 'words' is what we want now but this tiny FORTH system does not have it yet. We have to define it:
End of explanation
vm.dictate("code + push(pop(1)+pop()) end-code");  # pop two operands from FORTH data stack and push back the result  
vm.dictate("code .s print(stack) end-code");  # print the FORTH data stack
vm.dictate('code s" push(nexttoken(\'"\'));nexttoken() end-code');  # get a string 
vm.dictate('words');  # list all recent words
Explanation: In the above definition the vm.words is a python dictionary (not FORTH dictionary) defined in the project-k VM object as a property which is something like an array of all recent words in the recent vocabulary named forth which is the only one vocabulary comes with the FORTH kernel. Where a FORTH 'vocabulary' is simply a key in python dictionary key:value pair. 
We have only 4 words so far as the words new command show above. Where 'code' and 'end-code' are built-in in the FORTH kernel; 'hi!' and 'words' were defined above.
Define '+' and conventional FORTH words '.s' , and 's"'
Next exercise is to define some more FORTH words.
End of explanation
vm.stack = []  # clear the data stack
vm.dictate(' s" Forth "')  # get the string 'Forth '
vm.dictate(' s" is the easist "')  # get the string 'is the easist '
vm.dictate(' s" programming langage."')  # get the string 'programing language.'
vm.dictate('.s');  # view the data stack
print(vm.dictate('+').stack)  # concatenate top two strings
print(vm.dictate('+').stack)  # concatenate the reset
Explanation: This example demonstrates how to use built-in methods push(), pop(), nexttoken() and the stack property (or global variable). As shown in above definitions, we can omit vm. so vm.push, vm.stack are simplified to push, stack because code ... end-code definitions are right in the VM name space. Now let's try these new words:
End of explanation
print(vm.dictate('123 456 + ').pop());  # Push 123, push 456, add them 
print(vm.dictate('1.23 45.6 + ').pop());
Explanation: The + command can certainly concatenate strings together and also can add numbers because Python's + operator works that way. Please try it with integers and floating point numbers:
End of explanation
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