import re def lexical analyzer (expression): # regular expression that matches digits, alphabets, and characters pattern = '\d+|[a-zA-Z]+[^\s\d+a-zA-Z]+' #regular expression new_exp = re.findall (pattern, expression) #using builtin function findall return new_exp #Test the lexical analyzer expression = input("Enter an expression: " tokens = lexical_analyzer (expression) print (tokens)
import re def lexical analyzer (expression): # regular expression that matches digits, alphabets, and characters pattern = '\d+|[a-zA-Z]+[^\s\d+a-zA-Z]+' #regular expression new_exp = re.findall (pattern, expression) #using builtin function findall return new_exp #Test the lexical analyzer expression = input("Enter an expression: " tokens = lexical_analyzer (expression) print (tokens)
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter12: Points, Classes, Virtual Functions And Abstract Classes
Section: Chapter Questions
Problem 3PE
Related questions
Question
TASK:
Explain this PYTHON code in Simple English, each and every step the working etc.
Explain Functions and library used, Use STEPS (1,2...) and POINTS to EXPLAIN
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Recommended textbooks for you
C++ Programming: From Problem Analysis to Program…
Computer Science
ISBN:
9781337102087
Author:
D. S. Malik
Publisher:
Cengage Learning
Systems Architecture
Computer Science
ISBN:
9781305080195
Author:
Stephen D. Burd
Publisher:
Cengage Learning
New Perspectives on HTML5, CSS3, and JavaScript
Computer Science
ISBN:
9781305503922
Author:
Patrick M. Carey
Publisher:
Cengage Learning
C++ Programming: From Problem Analysis to Program…
Computer Science
ISBN:
9781337102087
Author:
D. S. Malik
Publisher:
Cengage Learning
Systems Architecture
Computer Science
ISBN:
9781305080195
Author:
Stephen D. Burd
Publisher:
Cengage Learning
New Perspectives on HTML5, CSS3, and JavaScript
Computer Science
ISBN:
9781305503922
Author:
Patrick M. Carey
Publisher:
Cengage Learning