example code license the example python scripts associated with this book are licensed under creative commons public domain (cc license this means that you're welcome to use any portion of the code for any purpose in your own programs formatting conventions code blocks will be used to present example codethis is python codeprint("helloworld"terminal commands follow the unix formatthis is terminal commandpython hello-world py (the dollar signs are not part of the command monospace text will be used to denote filenamehello-world py bold text will be used to denote new or important term keyboard shortcuts will be formatted as followsctrl menu shortcuts will be formatted as followsfile new file notes and important information will be highlighted as followsnote this is note filled in with placeholder text the quick brown fox jumps over the lazy dog the quick brown python slithers over the lazy hog