简单错误传播包
pyerrors的Python项目详细描述
##pyerrors
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###说明
这是一个不处理相关性的简单错误传播库。然而，在大多数情况下，聪明的 编写可以消除正确处理相关性的需要。单元测试 tests.py显示库的大部分功能。简而言之，你可以 `python >>> from pyerrors import E >>> a = E(10) # instantiates an error object with poisson error by default (10.0 ± 3.16) >>> b = E(10,2) # specified error (10.0 ± 2.0) >>> (4.0*a-2*b)/3 6.66666666667 ± 4.42216638714 >>> ((4.0*a-2*b)/3).round(2) 6.67 ± 4.42 >>> # unpack as a 2-tuple, or by index >>> v,e = E(10) >>> print v,e 10.0 3.16227766017 >>> # sum >>> print sum([E(i) for i in range(10)]) 45.0 ± 6.7082039325 >>> # nice repr when using numpy inputs >>> import numpy as np >>> counts = np.histogram(np.random.normal(0,1,100),bins=np.linspace(-4,4,8))[0] >>> va = E(counts) >>> print va [ 0.00 ± 0.00 2.00 ± 1.41 21.00 ± 4.58 47.00 ± 6.86 27.00 ± 5.20 3.00 ± 1.73 0.00 ± 0.00] >>> # but numpy requires some coersion afterwards (see the relevant test case in `tests.py` for details) >>> print sum(va.to_list()) 100.0 ± 10.0 `
###安装 pip安装pyerrors
###测试 python setup.py测试
###待办事项
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