By Alexander Hiam
ISBN-10: 1784399701
ISBN-13: 9781784399702
BeagleBone is a barebone desktop that may be configured and customised for various functions and is nearly part the cost of a regular computing device. This ebook will hide the fundamentals of ways BeagleBone Black's interface subsystems paintings, and will be managed utilizing well known Python libraries for BeagleBone Black. you can be brought to BeagleBone Black's GPIO, PWM, ADC, UART, SPI, I2C, and eQEP subsystems. we'll then dive deep into extra advanced integrated peripherals, demonstrating other ways to obtain enter from a consumer together with buttons, potentiometers, and rotary encoders with the eQEP module. we'll additionally know about interfacing with exterior units; this may be proven utilizing the serial modules to interface with exterior units reminiscent of temperature sensors and accelerometers. in the direction of the tip of the e-book, we are going to current a few real-world difficulties and reveal find out how to clear up them with the talents you've bought.
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Example text
Another approach is to enclose the string in a pair of matching triple quotes (either single or double): bigger = """ This is an even bigger string that spans three lines. """ Using triple quotes, you don't need to use the continuation character, and line breaks in the string literal are preserved as newline characters in the resulting Python string object. You can also make a string literal "raw" string by preceding it with an r or R: big = r"This is a long string\ with a backslash and a newline in it" With a raw string, backslash escape sequences are left alone, rather than being interpreted.
Often, one does not need indexing, slicing, and lenthe ability to iterate, one item at a time, suffices. In that case, one should speak of an iterable (or, to focus on the finite number of items issue, a bounded iterable). Iterables that are not sequences include dictionaries (iteration gives the keys of the dictionary, one at a time in arbitrary order), file objects (iteration gives the lines of the text file, one at a time), and many more, including iterators and generators. ). org/moin/PythonGlossary, you can find a Python Glossary that can help you with these and several other terms.
Codes greater than 126) or are strange control codes. 30 (30%), or for the string of those characters that are to be deemed "text" (which defaults to normal ASCII characters plus the four "normal" control characters, meaning ones that are often found in text). For example, if you expected Italian text encoded as ISO-8859-1, you could add the accented letters used in Italian, "àèéìÃ2Ã1", to the text_characters argument. Often, what you need to check as being either binary or text is not a string, but a file.