#print(mu)#print(sigma)X_norm=(X-mu)/sigmareturnX_norm,mu,sigma #计算损失 defcomputeCost(X,y,theta):m=y.shape[0]#J=(np.sum((X.dot(theta)-y)**2))/(2*m)C=X.dot(theta)-yJ2=(C.T.dot(C))/(2*m)returnJ2#梯度下降 defgradientDescent(X,y,theta,alpha,num_iters):m=y.sha...
# Print out some data points print('First 10 examples from the dataset: \n') print(' x = ',x[range(10),:],'\ny=',y[range(10),:]) First 10 examples from the dataset: x = [[2104 3] [1600 3] [2400 3] [1416 2] [3000 4] [1985 4] [1534 3] [1427 3] [1380 3] [...
# Print out some data points print('First 10 examples from the dataset: \n') print(' x = ',x[range(10),:],'\ny=',y[range(10),:]) First 10 examples from the dataset: x = [[2104 3] [1600 3] [2400 3] [1416 2] [3000 4] [1985 4] [1534 3] [1427 3] [1380 3] [...
python print(str) pythonprintstr输出多个变量 print函数说明print() 函数的详细语法格式如下:print (value,..., sep='', end='\n', file=sys.stdout, flush=False)从上面的语法格式可以看出,value 参数可以接受任意多个变量或变量,依次用逗号拼起来的,因此 print() 函数完全可以输出多个值。例如如下代码:...
Python allows you to assign values to multiple variables in one line: ExampleGet your own Python Server x, y, z ="Orange","Banana","Cherry" print(x) print(y) print(z) Try it Yourself » Note:Make sure the number of variables matches the number of values, or else you will get an...
Example: Assigning multiple values to multiple variables a, b, c =5,3.2,'Hello'print(a)# prints 5print(b)# prints 3.2print(c)# prints Hello Run Code If we want to assign the same value to multiple variables at once, we can do this as: ...
print("$%0.2f" % float(h(ytestscaled,theta))) # 计算回归预测结果 1. 2. 3. 4. 5. 6. Check of result: What is price of house with 1650 square feet and 3 bedrooms? $293098.15 1. 2. #正规方程法 from numpy.linalg import inv ...
If we define a variable with names a = 100 and A =200 then, Python differentiates between a and A. These variables are treated as two different variables (or objects). Example a = 100 A = 200 # value of a print(a) # 100 # Value of A print(A) # 200 a = a + A print(a)...
i=j=k=20print(i)# prints 20print(j)# prints 20print(k)# prints 20 2.3. Declaring Multiple Variables in One Line In Python, we can declare multiple variables in a single line by separating them with commas and assigning values to each of them. ...
debug:bool=False,):"""Applies `variables` to the `template` and writes to `file`."""withopen(file,"w")asf: ... 可以看出,经过格式化后的函数其参数层次分明地对齐,可读性大大的增强了。并且如果需要对函数中的参数进行注释或增加,直接新增或减少一行即可,丝毫不用调整其他参数的位置。