Print sorted list：
colors=['red','green','blue','yellow'] for color in sorted(colors): print color for color in sorted(colors,reverse=True): print color
Customer sort order:
Bad:
colors=['red','green','blue','yellow'] def compare_length(c1,c2): if len(c1) < len(c2): return -1 if len(c1) > len(c2): return 1 return 0 print sorted(colors,cmp=compare_length)
Good:
colors=['red','green','blue','yellow'] print sorted(colors,cmp=len)
Call a function until a sentinel value:
Bad:
blocks=[] while True: block = f.read(32) if block == '': break blocks.append(block)
Good:
blocks=[] for blocks in iter(partial(f.read,32), ''): blocks.append(block)
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