Python Programming for Raspberry Pi, Sams Teach Yourself in 24 Hours

In Listing 11.7, the .readline method is used on the temperature file, /home/pi/data/May2012TempF.txt. A for loop is used to ite ...

5: ... temp_data = temp_data_file.readline() 6: ... print (temp_data,end = '') 7: ... temp_data_file.tell() 8: ... 9: 1 79 10: 5 ...

12: >>> temp_data = temp_data_file.read(4) 13: >>> print (temp_data) 14: 2 84 15: >>> temp_data_file. ...

If you do not have the LXDE GUI started automatically at boot, start it now by typing startx and pressing Enter. Open the LXTer ...

You will create a file object and open your friends.txt file. Type my_friends_file = open ('friends.txt','r') at the prompt and ...

>>> temp_data_file = open('/home/pi/data/May2012TempF.txt','r') >>> temp_data_file.closed False >>> t ...

function was used. Once the file was opened, using the w mode, the text file was created. Watch Out!: Write Mode Removes Keep in ...

and the temperature data character string is turned into an integer on line 9. By the Way: A Number Is a String When reading in ...

because the newline \n escape sequence was tacked onto the end of each Celsius temperature data string in Listing 11.14, line 12 ...

Press the Tab key one time to properly indent under the for loop. Now that you are properly indented, type my_friend = input("F ...

repeat step 16. Press Ctrl+D to exit the Python interactive shell. If you want to power down your Raspberry Pi now, type sudo p ...

A. Here’s a hint: They are Sci-Fi related. Workshop Quiz 1. The os function is a built-in function. True or false? 2. Which file ...

Hour 12. Creating Functions What You’ll Learn in This Hour: How to create your own functions Retrieving data from functions Pass ...

statement3 statement4 With Python, there’s no “end of function” type of delimiter statement. When you’re done with the statement ...

Click here to view code image #!/usr/bin/python3 count = 1 print('This line comes before the function definition') def func1(): ...

def func1(): print('This is the first definition of the function name') func1() def func1(): print('This is a repeat of the same ...

In the script1204.py code, you define a function called dbl() that prompts for a number, converts the answer to an integer, and ...

>>> If you don’t provide any arguments, or if you provide the incorrect number of arguments, you get an error message f ...

Be careful when passing arguments to your Python functions. Python matches the argument values in the same order that you define ...

>>> With this definition, the width parameter is required, but the height parameter is optional. If you call the area2( ...