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在Python中，循环没有C样式，即for（i = 0; i <n; i ++）。存在“for in”循环，类似于其他语言中的每个循环

它可用于迭代迭代器和范围。

# Iterating over a list

print("List Iteration")

l = ["geeks", "for", "geeks"]

for i in l:

print(i)

# Iterating over a tuple (immutable)

print("\nTuple Iteration")

t = ("geeks", "for", "geeks")

for i in t:

print(i)

# Iterating over a String

print("\nString Iteration")

s = "Geeks"

for i in s :

print(i)

# Iterating over dictionary

print("\nDictionary Iteration")

d = dict()

d['xyz'] = 123

d['abc'] = 345

for i in d :

print("%s %d" %(i, d[i]))