Inconsistent use of tabs and spaces in indentation

Question

def contains_sequence(dna1, dna2):
    \'\'\' (str, str) -> bool

    Return True if and only if DNA sequence dna2 occurs in the DNA sequence
    dna1.

    >&         


        

Answer 1

According to the your Doc strings

your code:

b=False
len2=len(dna2)
i=0
for j in dna1:
    temp=dna1[i:i+len2]
    if temp == dna2:
        b=True
    i=i+1
return b

This much Big code can be simplified to one line

return dna1.find(dna2)>=0

Also if u are not good with indentations in 'vim' editor its good to practice in IDLE3