双重循环+遍历中修改字典//RuntimeError: dictionary changed size during iteration

[xylsmmmmmmmm3]

[xylsmmmmmmmm3]

shuzi = {'1': {'end': 3247341040L, 'star': 3247341040L}, 2: {'end': 1033039063, 'star': 1033039056},3:{'end':111,'star':2222222222222}}
for key1 in shuzi.keys():
print key1
if not shuzi.has_key(key1):
break
for key2 in shuzi:

"""
有没有更好得解决方法？

[xylsmmmmmmmm3]

shuzi = {'1': {'end': 3247341040L, 'star': 3247341040L}, 2: {'end': 1033039063, 'star': 1033039056},3:{'end':111,'star':2222222222222}}
for key1 in shuzi.keys():
if not shuzi.has_key(key1):
break
for key2 in shuzi:

[zhjits]

https://stackoverflow.com/questions/11941817/how-to-avoid-runtimeerror-dictionary-changed-size-during-iteration-error