Professional IronPython Chapter 2 Step-by-Step Procedure Update

Every once in a while, a small error gets past me that really is almost microscopic, yet ends up causing readers woe. Errors of this sort (or any sort at all) are the reason I wrote the Errors in Writing post so long ago. In this case, there is a small mistake in Professional IronPython that might not seem like such a big deal at first, but it has caused problems for readers, so I’m providing an update here.

In Step 7 on page 26 I ask you to choose File→Save All, after which, you’re supposed to see the dialog box shown in Figure 2-4. It turns out that the step doesn’t quite work and for an important reason. Back in step 4 I asked you to right click the IPY entry in Solution Explorer. Of course, that step highlights IPY, selecting it. As a consequence, step 7 can’t work as written because you can’t save IPY.

To make Step 7 work as printed in the book, first highlight the Solution ‘ipy’ (1 project) entry in Solution Explorer (see Figure 2-2). Selecting this entry means that you’re asking Visual Studio to save the solution, not IPY. Now when you choose File→Save All, you’ll see the Save File As dialog box shown in Figure 2-4 as expected.

Please let me know if you encounter any other errors of this sort and I’ll be more than happy to discuss them in my blog. For this, and any other book-related concerns, contact me at


Author: John

John Mueller is a freelance author and technical editor. He has writing in his blood, having produced 99 books and over 600 articles to date. The topics range from networking to artificial intelligence and from database management to heads-down programming. Some of his current books include a Web security book, discussions of how to manage big data using data science, a Windows command -line reference, and a book that shows how to build your own custom PC. His technical editing skills have helped over more than 67 authors refine the content of their manuscripts. John has provided technical editing services to both Data Based Advisor and Coast Compute magazines. He has also contributed articles to magazines such as Software Quality Connection, DevSource, InformIT, SQL Server Professional, Visual C++ Developer, Hard Core Visual Basic, asp.netPRO, Software Test and Performance, and Visual Basic Developer. Be sure to read John’s blog at When John isn’t working at the computer, you can find him outside in the garden, cutting wood, or generally enjoying nature. John also likes making wine and knitting. When not occupied with anything else, he makes glycerin soap and candles, which comes in handy for gift baskets. You can reach John on the Internet at John is also setting up a website at Feel free to take a look and make suggestions on how he can improve it.