? Deep learning by Andrew NG在Course2的作業(yè)挺多坑的轨帜,可能是當(dāng)時(shí)他布置作業(yè)時(shí)的環(huán)境比較舊皮假,而現(xiàn)在搭建的Anaconda環(huán)境相對較新鞋拟,有些方法已經(jīng)不適用而造成的的。
先完成Regularizaion的作業(yè)惹资,運(yùn)行
\COURSE 2 Improving Deep Neural Networks Hyperparameter tuning, Regularization and Optimization\week5\Regularization\Regularization.ipynb
第一坑:
首先踩到的第一個坑是如下提示:
train_X, train_Y, test_X, test_Y = load_2D_dataset()
TypeError? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Traceback (most recent call last)
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in to_rgba(c, alpha)
? ? 173? ? try:
--> 174? ? ? ? rgba = _colors_full_map.cache[c, alpha]
? ? 175? ? except (KeyError, TypeError):? # Not in cache, or unhashable.
TypeError: unhashable type: 'numpy.ndarray'
During handling of the above exception, another exception occurred:
ValueError? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Traceback (most recent call last)
d:\Anaconda3\lib\site-packages\matplotlib\axes\_axes.py in scatter(self, x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, **kwargs)
? 4231? ? ? ? ? ? try:? # Then is 'c' acceptable as PathCollection facecolors?
-> 4232? ? ? ? ? ? ? ? colors = mcolors.to_rgba_array(c)
? 4233? ? ? ? ? ? ? ? n_elem = colors.shape[0]
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in to_rgba_array(c, alpha)
? ? 274? ? for i, cc in enumerate(c):
--> 275? ? ? ? result[i] = to_rgba(cc, alpha)
? ? 276? ? return result
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in to_rgba(c, alpha)
? ? 175? ? except (KeyError, TypeError):? # Not in cache, or unhashable.
--> 176? ? ? ? rgba = _to_rgba_no_colorcycle(c, alpha)
? ? 177? ? ? ? try:
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in _to_rgba_no_colorcycle(c, alpha)
? ? 230? ? if len(c) not in [3, 4]:
--> 231? ? ? ? raise ValueError("RGBA sequence should have length 3 or 4")
? ? 232? ? if len(c) == 3 and alpha is None:
ValueError: RGBA sequence should have length 3 or 4
During handling of the above exception, another exception occurred:
ValueError? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Traceback (most recent call last)
<ipython-input-5-a9a84d38b990> in <module>
----> 1 train_X, train_Y, test_X, test_Y = load_2D_dataset()
~\Desktop\COURSE 2 Improving Deep Neural Networks Hyperparameter tuning, Regularization and Optimization\week5\Regularization\reg_utils.py in load_2D_dataset()
? ? 332? ? test_Y = data['yval'].T
? ? 333
--> 334? ? plt.scatter(train_X[0, :], train_X[1, :], c=train_Y, s=40, cmap=plt.cm.Spectral);
? ? 335
? ? 336? ? return train_X, train_Y, test_X, test_Y
d:\Anaconda3\lib\site-packages\matplotlib\pyplot.py in scatter(x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, data, **kwargs)
? 2860? ? ? ? vmin=vmin, vmax=vmax, alpha=alpha, linewidths=linewidths,
? 2861? ? ? ? verts=verts, edgecolors=edgecolors, **({"data": data} if data
-> 2862? ? ? ? is not None else {}), **kwargs)
? 2863? ? sci(__ret)
? 2864? ? return __ret
d:\Anaconda3\lib\site-packages\matplotlib\__init__.py in inner(ax, data, *args, **kwargs)
? 1808? ? ? ? ? ? ? ? ? ? ? ? "the Matplotlib list!)" % (label_namer, func.__name__),
? 1809? ? ? ? ? ? ? ? ? ? ? ? RuntimeWarning, stacklevel=2)
-> 1810? ? ? ? ? ? return func(ax, *args, **kwargs)
? 1811
? 1812? ? ? ? inner.__doc__ = _add_data_doc(inner.__doc__,
d:\Anaconda3\lib\site-packages\matplotlib\axes\_axes.py in scatter(self, x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, **kwargs)
? 4243? ? ? ? ? ? ? ? ? ? ? ? "acceptable for use with 'x' with size {xs}, "
? 4244? ? ? ? ? ? ? ? ? ? ? ? "'y' with size {ys}."
-> 4245? ? ? ? ? ? ? ? ? ? ? ? .format(nc=n_elem, xs=x.size, ys=y.size)
? 4246? ? ? ? ? ? ? ? ? ? )
? 4247? ? ? ? ? ? ? ? # Both the mapping *and* the RGBA conversion failed: pretty
ValueError: 'c' argument has 1 elements, which is not acceptable for use with 'x' with size 211, 'y' with size 211.
出現(xiàn)這種問題的原因是plt.scatter(X[0, :], X[1, :], c=y, cmap=plt.cm.Spectral)這個函數(shù)太舊了贺纲,
解決方案如下即可
按提示找到reg_utils.py文件就在作業(yè)的同一個目錄。
在頂部import如下
import operator
from functools import reduce
然后分別在
plot_decision_boundary()和load_2D_dataset()找到plt.scatter方法褪测,替換成
plt.scatter(X[0, :], X[1, :], c=reduce(operator.add, y), s=40, cmap=plt.cm.Spectral)
第二坑:
TypeError Traceback (most recent call last)
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in to_rgba(c, alpha)
? ? 173? ? try:
--> 174? ? ? ? rgba = _colors_full_map.cache[c, alpha]
? ? 175? ? except (KeyError, TypeError):? # Not in cache, or unhashable.
TypeError: unhashable type: 'numpy.ndarray'
During handling of the above exception, another exception occurred:
ValueError? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Traceback (most recent call last)
d:\Anaconda3\lib\site-packages\matplotlib\axes\_axes.py in scatter(self, x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, **kwargs)
? 4231? ? ? ? ? ? try:? # Then is 'c' acceptable as PathCollection facecolors?
-> 4232? ? ? ? ? ? ? ? colors = mcolors.to_rgba_array(c)
? 4233? ? ? ? ? ? ? ? n_elem = colors.shape[0]
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in to_rgba_array(c, alpha)
? ? 274? ? for i, cc in enumerate(c):
--> 275? ? ? ? result[i] = to_rgba(cc, alpha)
? ? 276? ? return result
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in to_rgba(c, alpha)
? ? 175? ? except (KeyError, TypeError):? # Not in cache, or unhashable.
--> 176? ? ? ? rgba = _to_rgba_no_colorcycle(c, alpha)
? ? 177? ? ? ? try:
d:\Anaconda3\lib\site-packages\matplotlib\colors.py in _to_rgba_no_colorcycle(c, alpha)
? ? 230? ? if len(c) not in [3, 4]:
--> 231? ? ? ? raise ValueError("RGBA sequence should have length 3 or 4")
? ? 232? ? if len(c) == 3 and alpha is None:
ValueError: RGBA sequence should have length 3 or 4
During handling of the above exception, another exception occurred:
ValueError? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Traceback (most recent call last)
<ipython-input-7-a9a84d38b990> in <module>
----> 1 train_X, train_Y, test_X, test_Y = load_2D_dataset()
~\Desktop\COURSE 2 Improving Deep Neural Networks Hyperparameter tuning, Regularization and Optimization\week5\Regularization\reg_utils.py in load_2D_dataset()
? ? 332? ? train_X = data['X'].T
? ? 333? ? train_Y = data['y'].T
--> 334? ? test_X = data['Xval'].T
? ? 335? ? test_Y = data['yval'].T
? ? 336
d:\Anaconda3\lib\site-packages\matplotlib\pyplot.py in scatter(x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, data, **kwargs)
? 2860? ? ? ? vmin=vmin, vmax=vmax, alpha=alpha, linewidths=linewidths,
? 2861? ? ? ? verts=verts, edgecolors=edgecolors, **({"data": data} if data
-> 2862? ? ? ? is not None else {}), **kwargs)
? 2863? ? sci(__ret)
? 2864? ? return __ret
d:\Anaconda3\lib\site-packages\matplotlib\__init__.py in inner(ax, data, *args, **kwargs)
? 1808? ? ? ? ? ? ? ? ? ? ? ? "the Matplotlib list!)" % (label_namer, func.__name__),
? 1809? ? ? ? ? ? ? ? ? ? ? ? RuntimeWarning, stacklevel=2)
-> 1810? ? ? ? ? ? return func(ax, *args, **kwargs)
? 1811
? 1812? ? ? ? inner.__doc__ = _add_data_doc(inner.__doc__,
d:\Anaconda3\lib\site-packages\matplotlib\axes\_axes.py in scatter(self, x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, **kwargs)
? 4243? ? ? ? ? ? ? ? ? ? ? ? "acceptable for use with 'x' with size {xs}, "
? 4244? ? ? ? ? ? ? ? ? ? ? ? "'y' with size {ys}."
-> 4245? ? ? ? ? ? ? ? ? ? ? ? .format(nc=n_elem, xs=x.size, ys=y.size)
? 4246? ? ? ? ? ? ? ? ? ? )
? 4247? ? ? ? ? ? ? ? # Both the mapping *and* the RGBA conversion failed: pretty
ValueError: 'c' argument has 1 elements, which is not acceptable for use with 'x' with size 211, 'y' with size 211.
==========================================
Traceback (most recent call last):
? File "d:\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 3296, in run_code
? ? exec(code_obj, self.user_global_ns, self.user_ns)
? File "<ipython-input-1-0b76c4151612>", line 4, in <module>
? ? from reg_utils import sigmoid, relu, plot_decision_boundary, initialize_parameters, load_2D_dataset, predict_dec
? File "C:\Users\34657\Desktop\COURSE 2 Improving Deep Neural Networks Hyperparameter tuning, Regularization and Optimization\week5\Regularization\reg_utils.py", line 328
? ? plt.scatter(X[0, :], X[1, :], c=reduce(operator.add, Y), s=40, cmap=plt.cm.Spectral)
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ^
TabError: inconsistent use of tabs and spaces in indentation
分析
提示空格問題猴誊??然而所有打開來看又很正常拔甏搿懈叹!
其實(shí)很多表面的正常,背后都隱藏著不正常分扎,你看到的是隔開了项阴,但實(shí)際上它可能是/t而不是我們普遍認(rèn)為的/space
參考這位網(wǎng)友的方案https://blog.csdn.net/qq_41096996/article/details/85947560
將上面的真空格替換錯誤行的假空格就OK了