Finding the complementry strand of DNA

I’m given the following DNA string:

mydna = 'AGUGGCUAUUACUACAUGCCGAAGUUCCUUAAAUUUAACUUACCAGGCUUAACCGGAUGAUGAUUAUUAUUACCUUAAUUUUA'

How can I get the DNA string’s complement?

>Solution :

No fancy stuff:

original_strand = 'AGUGGCUAUUACUACAUGCCGAAGUUCCUUAAAUUUAACUUACCAGGCUUAACCGGAUGAUGAUUAUUAUUACCUUAAUUUUA'
new_strand = ''

for char in original_strand: # for every character in the string...
    if char == 'A':
        replace_with = 'U'
    elif char == 'U':
        replace_with = 'A'
    elif char == 'C':
        replace_with = 'G'
    elif char == 'G':
        replace_with = 'C'

    new_strand += replace_with

print(new_strand)