application

Question 1

Review how to create patterns using regular expressions

Answer 1

• p…n = any single character
• (ab|cd) = ab or cd
• t(en|wo) = ten or two
• [abc] = a, b, or c
• pyth[aeiou]n = python where the fourth character is a vowel
• [^abc] = any character except a, b, or c
• pyth[^aeiu]n = python where the fourth character is not a vowel except i
• [a-z] any lowercase letter
• [A-Z]ytho[a-z] = python where the first character is uppercase, followed by ytho and a lowercase letter
• [^a-z] = any characters except lowercase letters
• pytho[^b-d] = python where the fifth character is not b, c, or d
• \A = beginning of the string
• \b = beginning or end of a word
• re.search(r”th\B”, “Python”) = th not at the end of the word
• \d = a digit (same as [0-9])
• \D = a non-digit
• \w = any alphanumeric character (a-z, A-Z, 0-9, _)
• \W = any non-alphanumeric character
• \s = a whitespace character
• \S = a non-whitespace character
• \Z = end of the string
• • = zero or more occurrences of pattern
• • = one or more occurrences of pattern
• ? = zero or one occurrence of pattern
• ^ = starts with a specified pattern
• $ = ends with a specified pattern
• {n} = exactly n occurrences of pattern
• {n,} = at least n occurrences of pattern
• {n,m} = between n and m occurrences (inclusive)

Question 2

Review how to store information in a list, sort the information, and output the information

Answer 2

• create a list called information_list containing numerical data [4, 2, 7, 1, 5].
• Use the sort() method to sort the elements of the list in ascending order. If you want to sort in descending order, you can use the reverse=True parameter: information_list.sort(reverse=True).
• To add information to an empty list, .append(listname)
• Finally, we use the print() fnction to output the sorted information.

Question 3

Review how to draw shapes using PyGame

Answer 3

• Line - pygame.draw.line(surface, color, (x1, y1), (x2, y2), width)
• Rectangle - pygame.draw.rect(surface, color, (x, y, width, height), outline)
• Rounded rectangle - pygame.draw.rect(surface, color, (x, y, width, height), outline, radius) (radius is 4 numbers, one for each corner. ex, 0,0,0,0)
• Polygon - pygame.draw.polygon(surface, color, points, width)
• Circle - pygame.draw.circle(screen, color, (x, y), radius, width) draws circle with fixed radius
• Ellipse - pygame.draw.ellipse(screen, color, (x, y, width, height), width)