拜厄练习曲33, 34
第六周了，还在慢慢坚持。这礼拜英国很热，没什么心情练琴。这周弹的33，34又是两首四手连弹的曲子，单练感觉很单调。周末又看了几集琴之林，看到Kai弹钢琴，又多点坚持练琴的动力。
Exercism: RNA Transcription (Python)
我以为超简单一个map就可以解决。但一看其他人的方法，居然还有更简单的，使用str.translate(table)，table可以用str.maketrans来生成。 原版 dna_rna_map = { "G": "C", "C": "G", "T": "A", "A": "U", } def to_rna(dna_strand): rna = "" for c in dna_strand: rna += dna_rna_map[c] return rna 优化版 def to_rna(dna_strand): return dna_strand.translate(str.maketrans("GCTA", "CGAU"))
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