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

dictionary_name[key1] = value1, as shown in Listing 9.3. LISTING 9.3 Populating a Dictionary One Pair at a Time Click here to vi ...

Only a key can be used to access the value. You cannot use a numeric index to access a key/value element because the elements in ...

By the Way: Not a List For Listing 9.6, you might think that you could just enter the list operation key_list.sort (), but that ...

In Listing 9.8, a particular key is updated to a new value. However, if the key does not already exist, a new key/value pair is ...

Programming with Dictionaries Put on your weather researcher hat: You are going to do some weather data processing using a dicti ...

Listing 9.11 shows partial output from this Python script being run. The data being entered is record high daily temperatures (F ...

11: for may_date in date_keys: #Loop to convert F to C 12: # 13: high_temp_f = may_high_temp_c[may_date] #Obtain Fahrenheit 14: ...

... Record High Temperatures in Indianapolis during Race Month May 1: 88 F 31.1 C May 2: 85 F 29.4 C May 3: 88 F 31.1 C ... pi@r ...

In order to determine the most common temperature, you must import the non-built-in Counter function, as shown on line 12 in Lis ...

class. The type function is then used on it. You can see that the students_in_108 is a set object type. LISTING 9.16 Creating an ...

In order to create the elements properly, they must be between brackets. In this example, the elements are all strings, but the ...

a set must be unique. So, even though the student Raz Pi was in both sets, he is listed only one time in the union set, students ...

A symmetric set difference is a created third set that contains only elements that are solely in one set or the other. Thus, loo ...

Click here to view code image set_name.update([element(s)_to_add]) In Listing 9.25, a mass addition is made to the students_in_1 ...

>>> students_in_108 {'Paul Bohall', 'Raz Pi', 'Jason Jones'} >>> students_in_108.discard('Alan Griffith') > ...

variable style of naming called camel Case. camel Case variable names, popular with Python script writers, start out with lowerc ...

6: diff_temps2011 = highMayTemp2011.difference(highMayTemp2012) 7: # 8: # Print out determined data 9: print () 10: print ("Whic ...

script. In Hour 10, you will learn about another object type: strings. Q&A Q. What is a dictionary pop operation? A. A dicti ...

Hour 10. Working with Strings What You’ll Learn in This Hour: How to create strings Working with string functions Formatting str ...

If you’re working with the English language in your scripts, the Python v3 change to Unicode format isn’t readily apparent. You ...