Problem 1: Write a class NameSet that collects a unique set of names. Within the class, names should be stored in a list. NameSet should accept names in any format (upper case, lower case, etc.), but keep them capitalized.
Hint - when solving this question, these string functions may be useful: upper(), lower(), and capitalize().
class NameSet:
def __init__(self):
self.unique_list = [] # creates an empty list to keep unique names
def add_name(self, name): # if a name is unique, adds it to the list
if name.capitalize() in self.unique_list: # check if a name is already in the list
pass
else: # if the name is not in the list, then add it
self.unique_list.append(name.capitalize())
names = NameSet()
names.add_name("Isabelle")
names.add_name("isabelle")
names.add_name("Tom")
names.add_name("ToM")
names.add_name("Timmy")
names.add_name("TiMMy")
names.add_name("Coco")
names.add_name("COCO")
print(names.unique_list)
Problem 2: Write a class CountNuc that stores the counts of A's, C's, G's, and T's in a DNA sequence. Your class should be able to accept both upper and lower case DNA sequences. Nucleotide counts in CountNuc should be stored in a dictionary. Once your class has been written, confirm your class operates correctly on a test string "AGct". After that, determine the counts of A's, C's, G's, and T's in dna_string string given below, and print the counts.
class CountNuc:
def __init__(self):
self.nuc_dict = {} # creates a dictionary to keep counts of nucleotides
def add_nuc(self, nuc): # increments the count for a nucleotide by 1
nuc = nuc.upper() # convert a nucleotide to upper case
if nuc in self.nuc_dict: # check if nucleotide is in the dictionary
self.nuc_dict[nuc] += 1 # increment the count of a nucleotide by 1
else: # if nucleotide is not in the dictionary
self.nuc_dict[nuc] = 1 # set the count for a nucleotide to 1
# test the class `CountNuc` with small test string
test_dna_string = "AGct"
nuc_count1 = CountNuc()
for N in test_dna_string:
nuc_count1.add_nuc(N)
print(nuc_count1.nuc_dict)
# determine the counts of A's, C's, G's and T's of this string:
dna_string = "ATCGAGCTataCCGATACAGGcTGGTATAAAAgatTC"
nuc_count2 = CountNuc()
for N in dna_string:
nuc_count2.add_nuc(N)
print(nuc_count2.nuc_dict)