Python equivalent of Ruby's each

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Accessing the index in 'for' loops? 17 answers

---

就像是：

for i, v in enumerate(a):
   print "{} : {}".format(i, v)

---

That'd be enumerate.

a=['a','b','c']
for i,v in enumerate(a):
    print "%i : %s" % (i, v)

Prints

0 : a
1 : b
2 : c

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