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CorePythonProgramming/func_arg.md
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+convert()函数传入一个内建函数int(),long(), 或者float()来执行转换:
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+
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+```python
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+#!/usr/bin/env python
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+def convert(func, seq):
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+ 'conv. sequence of numbers to same type'
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+ return [func(eachNum) for eachNum in seq]
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+myseq = (123, 45.67, -6.2e8, 999999999L)
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+print convert(int, myseq)
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+print convert(long, myseq)
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+print convert(float, myseq)
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+```
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+输出：
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+ [123, 45, -620000000, 999999999]
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+ [123L, 45L, -620000000L, 999999999L]
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+ [123.0, 45.670000000000002, -620000000.0, 999999999.0]
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