I want to align two sequnces in bipython using needleman wunsch algorithm
file1.faa:
>seq_1
gagtcccagctgtgcctgactaaccgtgtttctcttgtatctaggagtgctcccaccccagcccgttgctgcccagctgtttaattgagttgtcatatgttaataacggtatattggaacactgtataacaccaacacactcgagtctttcaagactgcagataagaagctccttttggaacaagcagcaaatgaggttagctg
file2.faa:
>seq_2
GAGTCCCAGCTGTGCCTGACTAACCGTGTTTCTCTTGTATCTAGGAGTGCTCCCACCCCAGCCCGTTGCTGCCCAGCTGTTTAATTGAGTTGTCATATGTTAATAACGGTATTGGAACACTGTATAACACCAACACACTCGAGTCTTTCAAGACTGCAGATAAGAAGCTCCTTTTGGAACAAGCAGCAAATGAGGTTAGCTGAGATCGGAAGAGCACACGTCTGAACTCCAGTCACTAGCGTTCTCATCT
I have tried
>>from Bio.Emboss.Applications import NeedleCommandline
>>> from Bio import AlignIO
>>> needle_cline = NeedleCommandline(asequence="file1.faa", bsequence="file2.faa",gapopen=10, gapextend=0.5, outfile="needle.txt")
But the output file needle.txt does not get written. Can you help?