Part 3: Flow Control

Outline

• If, else if, else
• For loops
• List comprehension
• While, Iterators
• Break, Continue, Pass, Try, Except
• Simple Functions
• Group Exercise

If, else if, else.

• If, elif (else if), and else statements are used in python to control what happens based on the circumstance of one or more events:
  • 
• The following are valid orders of statements. In both scenarios where elif is, as many elif statements can be there as desired.
  • 

if True:
    print("Hi there!")

if 22:
    print("Hello world")

if True or False:
    print("Binary operators work here.")


if 0:
    print("This won't be printed")
elif 1:
    print("Any value other then 0 is treated as True")
else:
    print("This won't be printed")

For loops

Iterating through lists

wizard_list = ["Harry", "Ron", "Hermione", "Fred", "George"]
for name in wizard_list:
    print(name + " says Wingardium Leviosa")

Iterating through dictionaries

• Looping through the keys in a dictionary, or iterating through other objects while construction a dictionary is a valuable way to construct robust objects that are easy to build upon.
• We can loop through the .keys() or .values() as well .items() which is both the key and value pair together like this. for key, value in d.items(): print(key, value)

wizard_dict = {"Harry": "Lumos", "Ron": "Alohomora", "Hermione": "Wingardium Leviosa", "Fred": "Riddikulus", "George": "Sectumsempra"} 
for wizard in wizard_dict.keys():
    print(wizard + " says " + wizard_dict[wizard]) 


for spell in wizard_dict.values():
    print(f"A wizard says {spell}")

List Comprehension

• In python you can construct extremely custom lists in just a line of code.
• List comprehensions enables a lot of really cool 1-liners using a for loop and if, elif, else statements in a 1-line format.

  wizard_dict = {"Harry Potter": "Lumos", "Ron Weasley": "Alohomora", "Hermione Granger": "Wingardium Leviosa", \
  "Fred Weasley": "Riddikulus", "George Weasley": "Sectumsempra"} 
  weasley_list = [wizard for wizard in wizard_dict.keys() if "Weasley" in wizard]
  weasley_list
  h_list = [wizard if "H" in wizard else "Voldemort" for wizard in wizard_dict.keys()]
  h_list
  

Challenge Questions:

While and Iterators

Iterators

• Lists, tuples, dictionaries, and sets are all iterable objects. They are iterable containers which you can get an iterator from.
• All these objects have a iter() method which is used to get an iterator.
• We can also use a for loop to iterate through an iterable object or next(some_iterator) to ge the next object.

While loops

• Evaluated as long as the condition is true. Instead of a True False value (boolean) it can also be a non-empty list or empty list, respectively.
  • 

h_iter = iter(h_list)
cont = True
while cont:
    if "Voldemort" == next(h_iter):
        cont = False
    else:
        print(next(h_iter))

h_iter = iter(h_list)
cont = True
while cont:
    value = next(h_iter)
    if "Voldemort" == value:
        cont = False
    else:
        print(value)

Break, continue, pass, try, except

Break vs Continue vs Pass

• Pass: When you call pass, the rest of the code outside of the if, elif, else statements will continue to execute.
• Continue: When you call continue, the continue will immediately return to the next part of the for loop.
• Break: When you call break nothing within the for loop, including the for loop will continue execution.

a = [0, 1, 2]
for element in a:
    if not element:
        pass
    print(element)


for element in a:
    if not element:
        continue
    print(element)


for element in a:
    if not element:
        break
    print(element)

Try and Except:

• Try:
• Except:

Simple Functions: parameters, scope, returning, passing

Lets define two functions or definitions

The two following functions are used to compare the different way that parameters can or can not have default arguments defined.

• simple_function:

def simple_function(some_string):
    string_passed = True
    if some_string:
        final_string = "You passed the following string: %s" % some_string
    else:
        string_passed =False
        final_string = None
    return string_passed, final_string

def default_function(some_string="Default string"):
    string_passed = True
    if some_string:
        final_string = "You passed the following string: %s" % some_string
    else:
        string_passed =False
        final_string = None
    return string_passed, final_string


simple_function()
simple_function("Testing")
default_function()
default_function("Testing")

# these are kind of advanced topics but good to briefly introduce you to
default_function(**{"some_string": "Dictionary_testing"})
default_function(*["some_string"])

Group Exercises (~30 mins)

1. Use the below to perform the following tasks:

   seq = "CGGTAAGGCACTTGATATATTAATGTTCAGGCGGACATCGGCAGGGTATATTGCGTTAGGATCTAATTAATCTATCAGACTACTTGAGGATTGTCACCTGATGGTAATAGCGTAGTGGGGATCGCTAATCCTACTGTCGATAGACGGCTGCGGTTAAACTAAGCATCTTGCTTCCGGACGGTGGAACCGATTCAAGCGTTAGCAAATGTCAGGTTCACACTAAAGAATCAGCGGGTCTCCCCTACATCTTGAGTTTTATGGCTAACCCTATATCTGTCGATAGCATGGCAGGTTCAATTTAATCACAGTGCTTGCACTGACCTCGCCTACCGGAAGCCCCGCCGCCCAAAGTGACACCAGAGTCTTCGTCACGCAGATAACGCCCCGTGCTATCTGTCCCCCGTCCTTCGAGCAGGAGTTTGGTCTGACGCCTACTTCGGCGAACGTAACCCCTCCTTGTCTGTATTAAACTGCCCCGGATGTCGACTGGTAACAAGACGGACTACAAATAATGTGTACCTTTAGACGTTCTTTAGTGATATATTGTGACCACGTATTACAGAGATACACGACATCTCCTTTATAGGTACACATAACCTAGGATCCGTAGCACCGGGCCGGATTCTGCCCAGCAAGGTGCATCCCATAAGCGTAAACACTGCACGGCGGTCAGAACTCCCCACAATCGATACGGTGTCAACTATGGTACGGATGTCAGTCGGTCCTGTAGATGCACTTGGAAGTGTACCGCGTAGCGTCGCAGGAGCGTAAACATCACCTGGACGGTCCTTTCCAGTAATGAGGAACTCAAACATATAGGGCAGG"
   

   • What is the complement of this strand of DNA?
   • What is the reverse complement of this strand of DNA?
2. Use the below to perform the following tasks:

   table = { 
        'AUA':'I', 'AUC':'I', 'AUU':'I', 'AUG':'M',
        'ACA':'T', 'ACC':'T', 'ACG':'T', 'ACU':'T',
        'AAC':'N', 'AAU':'N', 'AAA':'K', 'AAG':'K',
        'AGC':'S', 'AGU':'S', 'AGA':'R', 'AGG':'R',
        'CUA':'L', 'CUC':'L', 'CUG':'L', 'CUU':'L',
        'CCA':'P', 'CCC':'P', 'CCG':'P', 'CCU':'P',
        'CAC':'H', 'CAU':'H', 'CAA':'Q', 'CAG':'Q',
        'CGA':'R', 'CGC':'R', 'CGG':'R', 'CGU':'R',
        'GUA':'V', 'GUC':'V', 'GUG':'V', 'GUU':'V',
        'GCA':'A', 'GCC':'A', 'GCG':'A', 'GCU':'A',
        'GAC':'D', 'GAU':'D', 'GAA':'E', 'GAG':'E',
        'GGA':'G', 'GGC':'G', 'GGG':'G', 'GGU':'G',
        'UCA':'S', 'UCC':'S', 'UCG':'S', 'UCU':'S',
        'UUC':'F', 'UUU':'F', 'UUA':'L', 'UUG':'L',
        'UAC':'Y', 'UAU':'Y', 'UAA':'Stop', 'UAG':'Stop',
        'UGC':'C', 'UGU':'C', 'UGA':'Stop', 'UGG':'W',
    }
   rna = "AUGAGCGCGAGUCUUGGUCUCGCAUGGCCCGUGGUCGGGACAGCUGCACAUGGGGGACCAGUUAUCCUCAGUAUAACUUUCUGCACCGAGACAAUGACUCAGUUACAGCGUAAUUUCAUUCUCCCUUCGCCAAAUGAUCCCUGGCUAAGUAACCAAAUUAAGCCCAAGCCUUGGACCGGCAGGAGUGAGCUGCUCUUUCAUAGGGGCAAAUCCAGCACGCCGCGGACGUCGAAGCCGUUGAAUCCACCACCGACGGUAUCGGGCUCCGGCAAUACACCAAUAAUUCCCUGCUUAACCCGUCCGUCUACUUCAGCUGUGACCCCAACGCGUGAUGACUGGCUGCGCCACGAGCACCCAGGACUCCGGAACCUUGAGCAUGGAAUGAUAAAAUUGGGCUCAGCCUGCUCAGUUCAAAGGGGCCCUUCAAGCUUACGCCCGAUCAGACAUUACAGCACUUCGAGGGAUCGUAUAAGAGCUUGUCUCCAUAACACGACCCGAUGGGGCCAACAGACACUACUUCGAACUGCCGGGGGUCGAGAAUUAAUUCUACUGACUCCGUCCAGACACUGGGGGUUCCAAACUCAUUGGCUUCUAUGUGCGCCAGAGUCGUGGUGUAGGAUUUUUACUCCAUCUAUGAUGCUCGCUCUAGCACCACGCUUAUCCUACGUUAAAGCGUCAACUUCUGCUCUCACCCGCUUCUAUAGAACCAAUAGGAUGACCUGUUACCUUAAUAUAUUCUGCGCAGGGGGUGAUAAGAGACCGAAGAGAUAUCAGACCCUUUAUCAGACCUUGGCGCCCGCUAGCGCGACAUGUAAUACCCCGAUCGGCCCAAUACAUUCGCCUCCCCACGUGGGCCCUCCCCGUGCCACUCACCCCCACCCCCUGUUAUUACAGCUCCGAUUCUGCUAUUUUACCAUGCUCCAUCCCUUUAGAACAUCCUGGCGAACCAGCUAUUCUGUUCCUCUGGGGACAAGUCACGGAGUUCUCCCCCCGACCCCAGCCGCGUUUGCCCGUAUUACGAUUAGGUAUCGUCGCUUGAUGCUCAUAUGCCACAGGUCCACGAAAAGUCGCCUAUUUCCAAUCAGAGACCCGAAGGCUGUACGUUGGUUUAUGACAAUGAUCUUGAGCAUCGUUUCGAGCGCAGAGACUGGAGAUUUCCCUUGUCUAGACCAGAUGACGGGCGAUACGAUACCCUGGUUCAUGAAUGCAAAACUCGUUUCGACCUUUCUAUGGAGAUCGACUGGAGAAGCGGGCGUAUUCUGUAAAACUCGCAAGACCUACUACUUGACUCAGUUGAGCAUAUAUCGCAUCAGCCGGAUUGGUCCACAGAAAGGUUGUAAACCCACAGCGCUCUUAGAAGGUAAAAGGCAUUACCUUAUCCUAUCAAGACCACAUGUUCUAUUUGCCAACCGAACACUCUGCAAAAGCCGUAAGUCGAGCGCUUUGAGGGGAUCAGGGUGCUCCCUUGUCGACUAUGCGGCGGCGACGUUCAUCGUGGACUGGAGUCUCUAUCGAGUUGUCGAGCAUGAGGAGUUUUUUGUCCCUCUCAAGUUGUACGGCGUAGAUUGGUCGGUGGAUCAACUCCGUGUCACUCGCCCCCCCACAGAAGGGAUUCGGCAAGUGUGUUAUAUGGGAAAUGUACAAGAAGAUAUGUCAGUCGUCGACCUAUCUACAAAGAACCGUAGGCGUCGUGAAUCUUCUAACACGCGGCCAAGAAACGAAGAUCUCGUGGUUGUUCACUCUCCGGGCCUAACUACAGACAGUUCCGGACCUUGUCCUCAUUGUACGGUGAUACCGUCAUCGCACACUCACCGUUUUUCCGCGCCAGGGAGACCGGGCGAUUCGCGCACAGCAUAUGGCAAGGUGAGAUGUCUGUCUCACCGCCCUCGCAUCACUGACCCUAGCGUAUUCUCACCGAAAUCACGUCGUUGCUUAAGGCUAGGUCAUUCAUCCACGCGACGGGUACCAGCAAGUCCUCGCAGCGCUGCCGUGCCACACCAAACACGUGUGGACGUACCAAGGGGAGGCCAAAGGCAUCAGAGCGGUCGGUCCCUCGUUUACAUUUAUCAGAAUAAUCCAAACGCAAUGCUUCUUGCAGGCCAAUGGCGAUGCCCCGCGUAUGCCGCACUAUUGCAAGCCCCCUUUCCGUGGUGGAUAAGCUUGUCUUGUUGGUUACUCAAUGUAACUUCACAUCCAUUGCUUGCCGUUAUUAAUAGUACUUACCUGGGUGUCUUUUAUAUGACGCCUCGAAACCAGUCAAGUCGGGCAGGCGAGAGACUACGUAGAUAUCCAGUGGUUACUGCUGUGCUUCCCAGGUUAAUCUUGAUUGUUAUCCGAUUUUCAGACUUCUGCGCCGCAAAGUGGAAGAGUAAGUGGCUCUAUUCUGAUGGGUGUCAAUUGGCAGAAGCAAAAGAGGGCCACAGCGCCGAUCGUUCCCCAACAAGGUCGAUGUUCAAAGUGCAAAAGGCGGAUUUGGUCACUCUGGGAGAAAACGGCGCCGUAAGUCUUUGGUCAUUUGGGCCCAGUGGCAACCGGUACAUAACCACUGGCUAUCGUAUCAACGCGACUUGCACACGGGCUAGUAGUGAGAGUGCGCACCUCUCGAGGGUGGGCGGGCUUCUGAAGGGGUGUGAUAACUGUGAGCUUCCCUCAUGCUUGUACGUUCUCUUACCCUCUCUUUCUUUGUGUCAUCAAUUUCCCAGUGAAUGGCAUGAGCGCAUACAAUCCAAGUGGUUACGCACUCCCAAAACCCCGGAUGAACUAGAACCGCCGGAGCCUCAAAUUGGUGUGGGCAGCACGACGCGCCCACUAGAGAUUUGUACUUUUAUCCGGAAGCAUCGUAUAGGAACCGCAUUAUGGAUUGUGUUCCGUGAACCCUACCAGGUAGCACGGCUUAACUCGUGUUCCGCGCCCGAAGCUCUAAACGAGUUGCCACAUCCUCUCUUCAAACUUGAAAGUAUAUUAGAAGCAGCCCUGCAAACACGCUCAAGCACGGAACAGUAUCUUAUACGAAGUAGCGGAUACGGAGAUAUUCGAUCUGGCCACGCGAUUUCCAUCGGACCAGACCUGCAAAAUGUGGAAGUGGUGUCCGUAUGGUAUCUCCAACGACAGUGGCGCCACAAGAGGUCAGGCUCUCCGCUUAGACUGCAUUCUUCAUUUCUAUGGAAGAAUGGGUUGGCUUCUCCAGCGCAGUCACUUAUAACAGCCUCGUGUGAGGAAGCUAAGAGGUGUCCUCAUAAGCGGUCGCACCUAUUGGAUCUUAAGCUAUAUAAGUUGACCGCGAAGGCGGACUUGCCACCGUUACCAGCAUCGCAACCGAUUAUACCGCCUGUCGACGACGGGUACACCCAUGUCCCUUGUCGCUCUUAUCAGGGGCGUGGUCGAGGACGGAACGUAGCGGUUGGUCCCUUCCCCAGUACCGGAAACCCUACUCUGCAUCAGUCCGUUCACUCACACACUCGAUCUCACGUACUCCCAACCCAAGGAUGUUGGACGGGGUCUAAAGGCACUAUCGCUCCGGCUAUGCAGUUCAUAGGGUUGAGGCGUCAUCAUGCGUUCAGGGUGCACCAACACCCUAAAUCUUCUUACAGCCAUUGCGGUUCCUCGCUAGAGCCAGGGUACGUCGUAGGCGUGCCGAUAAUUGGGUCAGUCCUGGCCGCGGUUACUAGAGGGAAUGGAAGAGAGUAUAAAAAAGGUAAUGCCUGGUCGCGUUACCUCACGACCGAACGUUUGGCGGUGCGAAUAGCGAGGGAUUCAGGGGCUAUUCCCGUGGCGAGGGUAAGAGUUACACUUAACGGAGAGGAUCGAAUUCGGAUCCCCUUGGCCUUACGCGUGUAUGCCUUUCCGCCUGUCCCAUCAGCCAAGUUACCGUCCAAAACGGAAUCCACCUAUAGCUUUGCCAUGCGCUGUACUGACUGUUUGUGCGUAGUGAGCUUUACCGGAUCACUGUGGUGGAGGGCCCGACUAUCCAAGAGUGGCGACUAUUUCCUGCAUUCCCCUCAGAAUGCACGGUCGGGGACCUUGACCGGUCAUUCCCGCAUUCUGUGGGUUCUUACGUCUUUACGAAAUCCCCUCUUCACGGUCGUUCCCGGCCAAUUCAACAGUAUUAAAGGACGACCGACCGAGCACCUAUCAGGGGUAAGGUCUAGACCACUCCUGGAACUCGCACGCAAGACGCCAGGCCAAGGGAUUUUCUCAUUAGGCCCUUACGGCGGGCCCCAAUAUUUGAAUGCACUGAAAUCCUCAUUAGCCAGCAGACAACAUCUCACCGUUAACGCGGGGCAGGUGGGUGAUCGAGCUCUAACCUACGGUAUAGCUGAGUCGCACUCCAAAAGUAGCAGCAACUUUCAGUCGCUCCGGCGGCACGAACGGGAUGGCUCAAAAGACAUUCUUACACCGACGAGCGCAAAUUACAUUCGGAAGCCCACGUGCUGGCUAGUCGCGGGUAAGGUGUGCUAUUUUAGACAAACAAUUCUAGUCCCCGCAGUAAUGCGCACAUCGGCUGUGCGUCCACUAAAACAGAUCUCCUAUGAUCAUUAUUUUUGGGAGUGGAAAUGCUAUUAUAUAUGGCCAACUGGCCCCUGCUCUGUCCCUGACUGGGUACGGGAUGACUCCCCAACUCUGUGGAGAAUCGCUUUUCUAGCUUGCCUACGGAUCUGUUCAAGCGUUUUUCCCGUCAAUAUACGGGGACCCGAUAUAAUACAAAUCUGCAAGGGGUUUGAAAAAGGGCACAUGCAUCAAAAUCACGCGAAGCGCUCACUGAGCGCCAAUAACCGAAACCUAAGGAUACUCUCCGGCGCUGAAAGGCGGGCGAUGAUGGAUUCCCACAGUGGCCUAGCGAGGGUAAGGGCGUUGCGUCGACAUAUGGAAGGUGCGCGAUGCGACGUAAGGGGCGUAACUCAUGGGUCACAAUAUAGCUGCGGUAUACCUCAUCAACUAAUGGAACGGCGUACCUCAGAAUACUGCCUAACGCCGAAGGAGGCCUGCCUUAGUCGGUUCAUUAGAUUUGCCUUACCGGGGAGUCAUAUUCUGCAAGUUACUCCUGAGUUAGGGCCGGUCAUCGUCCCAGAUCAGAACUCUACGAGCAGCACAGGGGCCCUCCGGCCAGCCAACCCAAAUUGGAUCAAACUCGUUGGCGUCGUAGUUUACAAACCUGGAUGUGGAAUGCUCGUUUACUUGUCCGCAAGCGGACAGCAUAUCGGACCUGACAACCGAAACGGAACCAAGAACCGAGCUCAUCGCACACGGGUGUUCUCCUACCUGAUCCUAACUAUAACACGGCACCCGUCUGGACUGUGCUUUCAGGGGGACCCUAGGUCCAUCAAUUUGGCUGCCGACUGGAAGUCGGGUUCUGUGAUCAUCUCAUUGCAGUAUAGGUUCUCGACACGCUCUCCACUGUUAUCAUCAUAUCAGUUUCUUCAAGGCUCAACUCCCGUCAGAGCCGAUGUACUCAGAACCGGCAAGAGGACCUCGGGUGGGUUGUCUCCCAUCGAUCGGCUGGUCACGCCUGGGUCCGGUUGUCCGCCCCCUAUCCGUACGGACAUCCCCGAACGAGACACCGUCGCGUCGACGUCUGGUUUGGUUAUAAACAUUCCAUGUACAGCAUGUGCGACUCGAAGGACUGAUCAUUUGCGUAGUACCAAAAAGUGGGAGUCUGGGUGUUGCCCUGCUGGAAGCCCCCGUUAUCCCCGGUCUGAUAUUUCGUUGCCACGGAAUGUAGAAGUCCUGCAGUUGUGUAUUGCCAUCAAACUCAUUACCCACAAGGCUUGUAUAUGCUAUUUUCUGGCGCCUCUGGUUAGCCUGGAUACAAUUGCUCAAUCAAGGUAUGUUCCAUCGGAGUCGAAGACUCCUGAGGUAAUGUCCCACUCUGACGAUACCCACAGUUUCUCAUCUCUAGUAUCAAACGAAAUAUCCUCUACACUAAAAGCUUCUUACAAAGCAGGUGACUUAUCAUCAGUAGCCUGCUACAUACUGCCCUUAAACCCCAGUCUGAGUUCUGUUGAAGGCUGCACAACCUUCUGUCUAUCGGGGUUACUGCAAGGUGGGGUACACUCUGCAGGGGCACAUCAAGGUAGUAUACUAGAUCGGAUUAGUUCUUGGAGCAUUCAUUUUGCAAUGUGCAUCAAAUCCCUCUAUUGUCAGAUCCACAAGUUUAUAUUCAUGCACCCCGACGCUAAUAGGAAAAACCAAGGUUCUUUGAUCCCAGGUCAUGUUUGGGCGCGCGCUUGGGCCACAAAAUGCUGCAUCUGCUUCUGCGUCGGAGUGGACGGGACUAAUAGCAGGGAGGUGAGCUUGGGUCAAAUGCCUGCCAUGGAACCUAUUGCGUCGAGAGGAGCUACAUCAAGACGCAUAACUCUGUAUUGCAGCAAUGAAGUGAGUGACAUGACGGCGUUUUACUUCUCCGCGAGGAGUCUACCGGUAAUGAAAAACAGACCGCAACUAUGGAGGGAAUUAUGUAAGUCCCCCUCCGAGUUAUACGUAUGCCGGCUCUACGCCGGGGCUAUUCGUCGAAUUCGAAAUUUGGAAUACAACUCUUGUAAGAGGACCCGGAGCGAUUGCAAAGCGUAUGCCCGAGCGAGCAUAAUACGGUGUGCCCCGCUCCCAAUGGUGUAUUCUCACCUUCAGGCGGGGUGGAAUAAACUCUGUGGCCAUUGGAGGCGAGGAGUUUGUGCGGCGAACUGGUGCAUAUAUAGACCCCCCUUAUGCACGUGCACCAAGCCCUUGUGUACCAGGGCCGCUGAUCCAAAGAACAAGGACGAUAGCGGUCUUUCUUUUCUAGGUUACGUUCGGCCGUCCGAAGAAUCCACCUCGGCAGCAGGCAAAGUGCCUGGUACAAAGGUCCGACAUUGUCACUCAAGGCUAUCCACGGAUGAGCAGAUGACUGGCCUAACUGGCAUGCCGCUGCCCUGGUCUGAAGUACACUCCAGGAGUUUUCGUAGUCAUGUAGGGUGGCCCCAGUCAAGGGCUAUGCCGCUGCGACUCCCCCUCACUAGCGGCGAAGGUGGUCAUGUCUUAUCUACUCGCUCUGCCAGACCACAGAAUAGGCUUGGUAUUUCCCACGUCCCCGCGAUCUUACCACAUGUGUCCAAACAGGAAGUCCGUUCCAAGCAGUCAUUUGCUCGAGGGAUGGCUAAAAAAAUAGUCGGAGUUGGCGGGAAAGCUAACGCCCGGCAUUCACUCGCGUGCAUGCUGGAUUUACACCUUUGUGCGGUCUAUUGCGACAAAGCCGAUUCUUUGCUAAUCGCAAAGAAAGCCGAUGAACUAACGCAGUACAUCACAGGGCAAAGAAAGCCUGACUCCGUGAAGGCUUGUAGCGCAACAUCUAUCCUAGAUGAAAGACCGAUUAAAGCAUUACACAGCUACGGACACAGCGCGGUCCCUCGCAUACCCGCCUCCAACAUGUCCGCCGGCGCUUCUAGACACUUGGGCUCACCGUGCCGCAUUGCGUCUUCAAUUUUGAGUAGUCCAUUCUAUGCGAGAAAUUAUCUGAGGGUUGCCACUAACCCAUUCCAAGUGAGGUCCCGCUCCCUCAAAACACCAAUAUUCUCCAAUCCCCUUGAUACUAUGGGGCGACUUUGCCGGCAGAACCCACCCGUCUGCACUUCCGGGGAAGUAAUUAGUACGGAGGUUCGGAGCUCCUUCCUGGCGAUGCAUACUCUCAUUUCGCUCCAGCUCUCUCAACCGUUUCACUACGGGCAGAACAACGGUCACGAUGUAAAUGUGCCCCCAGCAUCUGAAGCACAUUUUACGCGCAGCGUAGAAUUCAGGACGUGGUGCCGCUUGCCCUGUGUAUUCAAUGAGGUAUUAAAGCAAAACUAUCAUUGUUUCGAUCAUUUACGCUCGCGCCUCUGGACUGAAGUCCGACACUGUGAGGCCAUCAACAUCCGGAUAUACUUUUAUCAUAUUAAGGGCACUCCCGUGCCGCGCUUACAUUAUCAUUCGAUUACCACCCUCUUUGAGACACAGAAAUUUGUGAGACUGCUCCCAUCCCUUUGCGGUCAUUUUUGUGCGAGCUUCGAGUUGCACAGUUAUUGUUUACGUUGCAGGUCCACCUGGAUUGUAGGUAAGAGUCGAGAGAUGGGGUUGAUGCGAGCCGCCCAUAACACAUCUUGCGGUGGCAUGCCCAUCCGAACGCAGUAUCGAGGGAGCGUUGUACUGCCAGGCCGGUCCGACAUGUGGAUUUUACACCUCUGCACUAUGCGGAAGAAUGAAGGCACCACCGGCUUCUUCUGGGCAUACUUUAUUCUAGUCUGUGGCAUAUGCUUUUCAUCCAUAGAAGCAACCCGCACAAUGAGAAGACGAGACCGCAGAAUACGUUUAAGGGUGUUAGCACUGAAGCCUUCGGAACUGGUAACUGAUAAGCUACACUCUCAAUCACCGACUUCAGAUCUGUCUUGUAAACAGAAUCCGAUAGAUCCUACAGCCCUGGCCUCCUUCAGGACUCGCGUCACCCUCCGUAAGGCCGCUGCAAGCUGCAUUAUGGGCCCCUUGGAGCAGGGAAGUAAGGCCCAGAUUGCCAGGUCCGUGCUUAUAAAAUUUGGUGGGCCUUUCAAGCAAUUAACGAUGUGUAACAUCUCGGCCAGUAGUAGGGACCAGUGCGCCGGACCCACGUACGCCUUAGUUGGGACUCAUGGAGAGGUGCAUGGACAUGUGCUUGUCAGACACGAGCAACCCAGACAUAUGUUCGCUUUUACUUUACUGUGGUCCCAUCGAGUAUACUUAGGAAGUCCUCGUCGUUUUUACAUGCUCUGCCGGCGCCGUGCGCCGCUAUCUUUUGUAGAACGCAGAGUACUGCAAACAGCAGUUGAGUACUCACCAACCGGCGCACUACUCUCAUGGUUGGGCCGGUCACUACUCUGGCUCCCACACACCGCUAUGGGUGUAGGGAAGCGAUUUGCCACAAACAGAGCGGAGACUUUAAUUCAUUCAGGGUAUCCCGCAGACCGAGUCCAGUCUGGCAAUGGUCAUAUUAGUAUUAGCGAUUCCAAUGGGUCCCUUGCGCCUAGUGGUAGGGAUUCUAAUCUAUCAUGCAAACGGUUUUCUACGCCUCCCUCGGUUUGCUUCGCCCUAUCAAGUUAUGGAACUGCAAGUUACAAAUUGACAAUAGCUCGACCCACAGUAAUCGCCGGCACUCCUAGAUCACUUGUAGCUAAAGGUAGUUACUUCAUCCCCAGGGCGUGGGAAGUCGGAACUGCGAUGGGAUGUAGAUCAACCUACUGCGAGGACGGAAGCUUCAAGGUUCGUCAACAUAUGGGUGAGCUGGCGUUCACGCCAAUGGCGUCGAAGCUUGCCCCGCGACUCCAUCAUUUGUAUCUAGGGAUCUCGACGUAG"
   

   • What is the protein encoded?
   • OPTIONAL: What are ALL the possible proteins possible from this rna string given any start position?
3. Use the below to perform the following tasks:

   str1 = "GCAGTGTCCACGGGATGTAAACCCCGTTTGGGACCTGCCAGGCTTCCGCACTACAGTGTGTTGCGCGTACTAGACCTTATGCCCATATGAACCTAGCTCGGGCTACTTGGATCGAGGAACTCGATACTTCCCCTACTGCAGCCCAACAATATCGTAGAAGGCAATCGAATCGCCTAAAAATTTATCGCCGCATTTTACGTATATGCCGGCTGTGGCGTATAGCAGAAAACCGCTCCTCGCAAAGTCTGGAGTATTGGATGAACAGTACCCTGGATAGAGTTAAAGGGCCAGAAAAAGCCCAAGACCATGGCTTACCAAGTTCCGTCCTATTCAATATAACCTCAGGCAGCTATGCGGAACTTTCAATAAAATACCAAGACATGTCTCTGTCTGCTCCAGAGCGAGTGGATAGGCCCGATTATTTATGTGTCGGAGGACCATGGTTCGCAATTACACTCAAGCGAGCGATTTTTTAACTGTCCGTTCACCTCACGGACCTCGGGAGGATACAGAATCGGGTGGTAATATAACGAACATAACCGTTTGTGATCCTGGAAATACACAAGTTCATAAAAAGTGTGACCCGAAAGTGGTTTCACTATATAGGTATTCCCCCTAGTATGGCAATCTCGGTCAGTCAGCACTGGCCGATGGCTCAAGGCAACATTAGGGGTCGGCGAACGCAGTTGCTCCAAATACAAGTGTGGTTGCAAGTAGCATACGGCACACCGCGGTCTGGGTATGAGCCATACGTGTGATTTTGGTCAATTACCTAAGCAGCTTGTAGTCATAGCTATCTTACCGATTAGCGAACCCAATGAAGAGTTCCAGCATTCGCGAATGGGGGGTACAAGTAGGCTCTCGGCCGCCTACTAGACCGGGCGGTAAGGTGGCGTGTAGACCAAATCCTTA"
   str2 = "AACTAATCAAACTGGCTGGGATTCCTTCGGCTAAATACAGTCCCATCCAAGTATAGTCTGTTATTTGTGCTACGCCTCAAGCCTCTGATATGCGGTACCCTTGGATTTGGAGTGTAGGCCACCAGATCTGTTTTGATCCGGCCGGATCGTATCGAAAGATACTGAAGGAGCTCATAAACATTGAGCGTGTCAGAGTGGCCGAACGCCGGCGGTCGCTACAACAACAGGTCGTCGACTCCCTAACGCGCTGACATAGGTCTAATAGTCACGTGTATGGTTCTATCTGTGGAACAAAAACTAAAGCTCTTGGCTTAAGATGATCGTACCTGACGGATGTAAGATTCGACAACTAAACCGTTTTATCGTTAAAACATGCCGACCTGACTGTTGCTTCTACAGAGCGCGTTCAAAATCGTGCCTATCCTACAGTCGTACGCTGAGTGAACGCTCTTAAAATCTAGGAAGAGTAATCTTGCATATCCGAACCGAGCTTAGCCCTCCAATGAATAGAAGTACGCGCCTTTGTATTCCGAACATTTTCGTCTGCGATACTGGAAACATGTATGATCGTAAACACTGGGACCCGTCATTAGGTCTTTGATAGTATCGGTGCCTATATGGTGTCATTCTTATTCGGGCTAAACGAACGCTTGGCTCTGCGAATTGTAACCTGAGCTGAGGCGCACTCATAACACAACAAACGGAGCCTGGATATATCATAATGATTCTCCTGGGATGGGTACACGAGGCACCTTAGACTGCGCATTGCTCTAAGCACACCTAAGAGCCTGGTCAAGAACAGCTATTTGCGTACGCAAAGATGCGTTGATTCAATGGGGAACGCCGGGATCTTCTAGACTCGCAGCGCCCTCACTGCCGGGTGCGTAGCCTTGCGCCTGTCCATGATCACCA"
   

   • How many matches are there between the two strings?
   • How many mismatches are there between the two strings?
   • What is the GC content of the first string?
   • What is the GC content of the second string?
4. If you have any free time after these tasks take a moment to check out Rosalind. It is a great platform for continuing to challenge your python and bioinformatics!
   • Rosalind