PPT-Python Strings

    String A String is a sequence of characters Access characters one at a time with a bracket operator and an offset index gtgtgt fruit banana gtgtgtletter fruit1 gtgtgtprint letter. Fall 20151 Week 4. CSCI-141. Scott C. Johnson. Computers can process text as well as numbers. Example: a news agency . might want . to find all the articles on Hurricane Katrina as part of . the tenth . Python for . Biologists. Part 1. This Lecture. Learning Objectives. Install Python. Data & Variables. Strings. String slicing. String methods. Lists. List methods & list slicing. Math. Arrays. Damian Gordon. Ref: Donaldson. , 2013, Python: Visual . QuickStart. . Guide, Chap.11. How Google works. How does Google search work?. How Google works. We’ll recall that we discussed the Google search engine before. Google search sends programs called “spiders” to explore the web and find webpages, and take copies of those pages. . 1. Python Programming:. An Introduction to. Computer Science. Chapter 5. Sequences: Strings, Lists, and Files. Python Programming, 3/e. 2. Objectives. To understand the string data type and how strings are represented in the computer.. Andy Wang. Object Oriented Programming in C++. COP 3330. C-style Strings. C-string is a null-terminated array of type char. No built-in string type in C. Must be char arrays. NOT every char array is a C-string, only null-terminated ones. Creating a string. There are many different ways to create a string. The simplest way is to hard code it into your program . mystring. = “Hello”. Remember individual characters of . a collection data type. can refer to a string variable as one variable or as many different components (characters). string values are delimited by either single quotes or double quotes. operators . Traversing a string. Traversing just means to process every character in a string, usually from left end to right end. Python allows for 2 ways to do this – both useful but not identical. if all you need is the value of each character in the string. ENHANCED EDITION. Unit Contents. Section A: “Hello World. !”–Python . Style. Section B: The Wacky Word Game. Section C: Build Your Own Calculator. Section D: Ask The Fortune Teller. Section E: Dogs and Cats. www.py4e.com. String Data Type. A string is a sequence of characters. A string literal uses quotes . '. Hello. '. or . ". Hello. ". For strings, means . “. concatenate. ”. When a string contains numbers, it is still a string. . Type. -- A string . is a sequence . of. . characters. -- A string literal. . uses. . quotes 'Hello'. . or. “Hello”. -- For strings, . means. . “concatenate”. -- When . a string contains numbers, . Strings Chapter 6 Python for Informatics: Exploring Information www.pythonlearn.com Slightly modified by Recep Kaya Göktaş in April 2015. Unless otherwise noted, the content of this course material is licensed under a Creative Commons Attribution 3.0 License. ). Summer Engineering Program 2018. University of Notre Dame. LAB COMPONENT. Setting Up Python. Jupyter. Notebook: . https://jupyter.readthedocs.io/en/latest/install.html. IDLE: Integrated Development and Learning Environment. aho@cs.columbia.edu. JerseySTEM. Math Club. March 5, 2017. Introduction. Regular expressions are a powerful notation for specifying patterns in text strings.. Regular expressions are used routinely in such applications as text editors, language translators, and Internet packet processors..