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事情我想做的事:
將字符串轉換較百分比XX%至0和1NumPy的I/O:轉換%比例上浮0和1之間
我的代碼之間的浮動:
#a. general case
data = "1, 2.3%, 45.\n6, 78.9%, 0"
names = ("i", "p", "n")
a = np.genfromtxt(io.BytesIO(data.encode()), names = names, delimiter = ",")
print (a) # returns [(1.0, nan, 45.0) (6.0, nan, 0.0)]
print (a.dtype) # reason: default dtype is float, cannot convert 2.3%, 78.9%
#b. converter case
convertfunc = lambda x: float(x.strip("%"))/100 # remove % and return the value in float (between 0 and 1)
b = np.genfromtxt(io.BytesIO(data.encode()), names = names, delimiter = ",", converters = {1:convertfunc}) # use indices for 2nd column as key and do the conversion
print (b)
print (b.dtype)
我的問題:
在一般情況下,在%的比例將被打印成南。由於故障dtype爲浮點數,因此無法轉換百分比。因此,我嘗試了轉換器方法。
然而,當我運行的代碼,就會發生錯誤:
convertfunc = lambda x: float(x.strip("%"))/100 # remove % and return the value in float (between 0 and 1)
TypeError: a bytes-like object is required, not 'str'
任何人都知道這裏有什麼問題嗎? (我正在使用python3.5)
謝謝你的任何答案。
非常感謝你。這真的回答了我的問題。 –