Theory Of Computation! Here's a CFG, called PY, representing a small Python-like language:(STMTS)→(STMT) (STMTS) | (STMT)(STMT)→(ID) = (EXPR) | if (EXPR): (STMT) else: (STMT)| print ((EXPR))| (EXPR)(EXPRS)→(EXPR),(EXPRS)|(EXPR) | ɛ(EXPR)→(ID)| (NUM)|(EXPR) == (EXPR) | (EXPR) + (EXPR)| (TUP) | lambda ((IDS)) : (EXPR)| (ID) ((EXPRS) )(TUP)→| ((EXPRS) )(NUM)→0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9(IDS)→(ID), (IDS)| (ID) | ɛ(ID)→a | b | c | ….. | x | y | z(Yes, real-world languages are much more complicated than textbook examples.)The variables of the CFG are all the names enclosed in angle brackets, e.g., (EXPR) is avariable name. All other symbols used in the rules are terminals.Note, however, that unlike Python, this grammar ignores whitespace (so your answers tothis problem do not need to explicitly deal with whitespace). Give a formal description of the grammar PY. You may assume that the given rulesare in a set called RULES.Give parse trees for the following strings in the language of PY:a. if x == 9: print ((a,b,c)) else: print (0)b. a = 1 \n f = lambda (x) : x + a \n f (5)

Given Context Free Grammar (CFG) PY contains, start variable <STMTS>, non terminals are…

Give a formal description of the grammar PY. You may assume that the given rules are in a set called RULES. Give parse trees for the following strings in the language of PY: a. if x == 9: print ((a,b,c)) else: print (0) b. a = 1 \n f = lambda (x) : x + a \n f (5)

Give a formal description of the grammar PY. You may assume that the given rules are in a set called RULES. Give parse trees for the following strings in the language of PY: a. if x == 9: print ((a,b,c)) else: print (0) b. a = 1 \n f = lambda (x) : x + a \n f (5)

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Theory Of Computation!

Here's a CFG, called PY, representing a small Python-like language:
(STMTS)→(STMT) (STMTS) | (STMT)
(STMT)→(ID) = (EXPR) | if (EXPR): (STMT) else: (STMT)
| print ((EXPR))| (EXPR)
(EXPRS)→(EXPR),(EXPRS)|(EXPR) | ɛ
(EXPR)→(ID)| (NUM)|(EXPR) == (EXPR) | (EXPR) + (EXPR)
| (TUP) | lambda ((IDS)) : (EXPR)| (ID) ((EXPRS) )
(TUP)→| ((EXPRS) )
(NUM)→0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
(IDS)→(ID), (IDS)| (ID) | ɛ
(ID)→a | b | c | ….. | x | y | z
(Yes, real-world languages are much more complicated than textbook examples.)
The variables of the CFG are all the names enclosed in angle brackets, e.g., (EXPR) is a
variable name. All other symbols used in the rules are terminals.
Note, however, that unlike Python, this grammar ignores whitespace (so your answers to
this problem do not need to explicitly deal with whitespace).

Give a formal description of the grammar PY. You may assume that the given rules
are in a set called RULES.
Give parse trees for the following strings in the language of PY:
a. if x == 9: print ((a,b,c)) else: print (0)
b. a = 1 \n f = lambda (x) : x + a \n f (5)

Theory that deals with fundamental questions around what problems can and cannot be solved using computation and uses a model of computation to understand the degree to which computers can assist in solving problems. There are three main branches of this subject: automata theory and formal languages, computational complexity theory, and computability theory.

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