hw08

School

University of Minnesota-Twin Cities *

*We aren’t endorsed by this school

Course

1133

Subject

Electrical Engineering

Date

Apr 3, 2024

Type

Pages

Uploaded by MagistrateHerring966

def gc_content(dna): ''' Purpose: Determine the fraction of the characters in a dna strand that are G or C Parameter(s): dna - string containing the DNA sequence characters (string) Return Value: frac - fraction of the DNA sequence that are G or C (float) ''' count = 0 for i in range(len(dna)): if dna[i] == 'C' or dna[i] == 'G': count += 1 frac = count / len(dna) return frac def complement(dna): ''' Purpose: Create a complimentary dna sequence based on the one provided Parameter(s): dna - sequence to be used as the template for the compliment sequence (string) Return Value: comp - complement sequence based off of the original dna sequence (string) ''' comp = '' for i in range(len(dna)): if dna[i] == 'A': comp += 'T' elif dna[i] == 'T': comp += 'A' elif dna[i] == 'C': comp += 'G' elif dna[i] == 'G': comp += 'C' return comp def find_urls(html): ''' Purpose: Find urls in HTML code using the href=" text to find them and add them to a list to be returned Parameter(s): html - html code to be searched for urls (string) Return Value: urls - all urls found in the HTML code, located using href=" identifier (list) ''' i = 0 urls = [] while i != -1: i = html.find('href="', i) if i != -1: i += 6 end = html.find('"',i) urls.append(html[i:end]) i = end return urls def sentiment(message):

''' Purpose: Determines whether text has a positive or negative tone. Parameters: message (str): The text to analyze Return Value: (int) The number of "positive" words in the text minus the number of "negative" words. ''' score = 0 words = message.replace('.',' ').replace(',',' ').replace('?',' ').replace(':',' ').replace('!',' ').replace('\n', ' ').replace('\t', ' ').upper().split(' ') with open('negative_words.txt') as nfile: negative = nfile.read().split() with open('positive_words.txt') as pfile: positive = pfile.read().split() for word in words: if word in positive: score += 1 print('Positive:', word) if word in negative: score -= 1 print('Negative:', word) return score if __name__ == '__main__': print(sentiment('We deny any allegations of dream intrusion.')) #Negative: DENY #Negative: ALLEGATIONS #Positive: DREAM #Negative: INTRUSION #-2 print(sentiment(''' Buzzwords Co. has easily achieved the impossible, through incredible efficiency gains and innovation.''')) #Positive: EASILY #Positive: ACHIEVED #Negative: IMPOSSIBLE #Positive: INCREDIBLE #Positive: EFFICIENCY #Positive: GAINS #Positive: INNOVATION #5 print(sentiment(''' Hello investors, Cave Johnson here. Now I know you've sunk a lot of money into the dual portal device. But I'm here to tell you we're not banging rocks together over here. We know how to make a quantum space hole. Caroline? See, portal here, portal there... Heh heh! Look at this thing go! Now, we have run into a reproducible human error problem: a lot of expensive equipment getting broken. But don't worry, Cave took care of it. Gentlemen, I give you the Long Fall Boot. Think of it as foot-based suit of armor for the Portal Device.

I'm not gonna lie to you, it's expensive as heck. But check this out: we told this Test Subject to just go ahead and try to land on her head. Heh heh! She can't do it! Good work, boots. So anyway, we're between banks right now, just make those checks out to cash. Cave Johnson, we're done here.''')) #Negative: ERROR #Negative: PROBLEM #Negative: WORRY #Negative: LIE #Positive: GOOD #-3

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