diff --git a/Bio334/02_python_introduction/exercises/files/exercise_2/strange_dna.txt b/Bio334/02_python_introduction/exercises/files/exercise_2/strange_dna.txt
deleted file mode 100644
index f60a1d4a904b65ce848e1b97e5995bce3a11e31c..0000000000000000000000000000000000000000
--- a/Bio334/02_python_introduction/exercises/files/exercise_2/strange_dna.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-TACGGGGCCGACATCTGCGGGGGGG
-GCGGGGCGGCCCCCGGTCAGACCAG
-AAAGGAGGCACCCCGCTTCCGCCGT
-GACTGGCATGTCGGGAGCGGGCCCC
-GAGCCAGGCCGCTGAGGGGCCGCCC
-TGCGCGCGACCCGCAGGGGCCCGCG
-GCGCCGACCAGCCGCCCCGCCCAGC
-CCCCTCGCGCTTCGACGGTCCGCAA
-CGCGCCAAGCCTCGCGAGCGCCGGC
-GCCTCCGACCGCGGGTGAGACCGCG
-GCGCGCGTAACGCGCTCCAGTGCCA
-GGCGCGTCCCCTTACGCCCGCGGGC
-AGTCCCCGGGCAGACACACGGAGGA
-CCGGGATCAAATTGAACCCAGAGCA
-TCACGACACCACGGCCGGGGCCCCG
-CAACCCGGGGTGGGAGCGGGACAGA