Question

Write a PYTHON program that stores the following amino acids into an array:

Trp
Arg
Liu
Ilu
Asp

Then prompt the user to give you a three letter amino acid abbreviation. Test to see if the a.a. the user gave you is in the array or not. If it is, print out a message to the user saying "Amino acid found", otherwise print out "Amino acid NOT found". You have to use a loop structure to look up every element in the array (one by one) and compare it with what the user gave you.

Answer 1

• here the concept of tuple is used t create array of strings.
• an input is asked from user.
• and then an integer is initialized with 0.
• and then the three letter input of string is searched in array and if it is found in array then the int p is incremented.
• after that it is checked that p is greater than 0 or not
• if it is greater than 0 then amino acid is found else not found.   
  1 arr=('Trp','Arg', 'Liu','Ilu','Asp') #creating tuple/array of acids #initializing integer p with 0 #taking input of three letters # loop to search acids # if it found then p is incremented p 0 3 g=input ("Enter three letter of sting" ) 4 for i in arr: if i==g : p p+1 7 if p>0: # if p will be greater than Zero # then acid will be found print("Amino acid found") 9 else: 10 print("Amino not acid found") # else not found 12 13 14 15 # u can also use array by using importing array above but the logic is same. # running the above code we will get tn676 O9912M:
  
  Enter three letter of sting'Trp' Amino acid found Press ENTER or type command to continue|