Python 101 by Michael Driscoll
By Michael Driscoll
How one can software with Python three from starting to finish.
Read or Download Python 101 PDF
Similar programming: programming languages books
When you consider that its free up no longer particularly 3 years in the past, C# has quickly received broad utilization. This e-book is written for C# 2. zero, protecting all of the new good points in 2. zero, together with generics. as well as its insurance of C#, it additionally offers info at the . internet Framework and sessions that C# interacts with. each bankruptcy contains questions and solutions besides recommended tasks.
Get the simplest info to be had for allowing software interoperability among the Microsoft . internet and Java 2 firm variation (J2EE) improvement structures. This publication bargains useful and prescriptive assistance for builders answerable for developing enterprise-level enterprise options the place platform interoperability is a demand and a truth.
Many scholars and programmers acquainted with Pascal are actually seeking to improve their talents to a well-structured object-oriented programming language similar to C++. This textbook offers such an "upgrade course" via offering a direction on C++ within the spirit of based programming. either authors train this fabric to a large choice of scholars and contain a number of programming workouts to check a reader's realizing and to extend their self assurance in programming in C++.
Extra info for Python 101
You will probably find the list comprehension the most useful at first and also the most popular. If you start using your imagination, I am sure you will be able to find uses for all three types of comprehensions. Now we’re ready to move on and learn about exception handling! Chapter 7 - Exception Handling What do you do when something bad happens in your program? Let’s say you try to open a file, but you typed in the wrong path or you ask the user for information and they type in some garbage.
It tells Python that you may be inserting text soon. If you follow the string with a percent sign and another string or variable, then Python will attempt to insert it into the string. You can insert multiple strings by putting multiple instances of %s inside your string. You’ll see that in the last example. Just note that when you insert more than one string, you have to enclose the strings that you’re going to insert with parentheses. Now let’s see what happens if we don’t insert enough strings: 1 2 3 4 >>> another_string = "I like %s and %s" % "Python" Traceback (most recent call last): File "
This is the default mode of the open function. Note that we didn’t pass a fully qualified path to the file that we wanted to open in the first example. txt. If it doesn’t find it, then you will receive an IOError. The second example does show a fully qualified path to the file, but you’ll notice that it begins with an “r”. This means that we want Python to treat the string as a raw string. txt As you can see, when we don’t specify it as a raw string, we get an invalid path. Why does this happen?