如何绕开from tensorflow.keras.models import Sequential from tensorflow.keras.layers import Conv1D, MaxPooling1D, Flatten, Dense这些库，我的python无法调用这些库

如果你无法使用 `tensorflow.keras` 库中的模块，你可以尝试使用其他深度学习框架，例如PyTorch或CNTK，或者使用更基础的Python库来手动实现这些层的功能。

以下是一个使用基础Python库手动实现CNN模型的示例：

import numpy as np
import matplotlib.pyplot as plt

# 定义卷积层
def conv1d(x, w, b, stride=1, padding=0):
    n, c, l = x.shape
    f, c, k = w.shape
    p = padding
    out_l = int(np.floor((l + 2*p - k) / stride)) + 1
    
    # 对输入数据进行padding
    x_pad = np.pad(x, ((0,0),(0,0),(p,p)), 'constant')
    
    # 定义输出
    out = np.zeros((n, f, out_l))
    
    # 卷积计算
    for i in range(out_l):
        x_window = x_pad[:, :, (i*stride):(i*stride+k)]
        for j in range(f):
            out[:,j,i] = np.sum(x_window * w[j,:,:], axis=(1,2)) + b[j]
    
    return out

# 定义max pooling层
def max_pool1d(x, pool_size=2, stride=None):
    n, c, l = x.shape
    if stride is None:
        stride = pool_size
    out_l = int(np.floor((l - pool_size) / stride)) + 1
    
    # 定义输出
    out = np.zeros((n, c, out_l))
    
    # pooling计算
    for i in range(out_l):
        x_window = x[:, :, (i*stride):(i*stride+pool_size)]
        out[:,:,i] = np.max(x_window, axis=2)
    
    return out

# 定义全连接层
def linear(x, w, b):
    return np.dot(x, w) + b

# 定义ReLU激活函数
def relu(x):
    return np.maximum(0, x)

# 生成正弦函数数据
x = np.linspace(0, 50, 500)
y = np.sin(x)

# 将数据变为3D张量
X = y.reshape(-1, 500, 1)

# 定义模型参数
W1 = np.random.randn(32, 1, 3)
b1 = np.zeros((32,))
W2 = np.random.randn(64, 32, 3)
b2 = np.zeros((64,))
W3 = np.random.randn(256, 64)
b3 = np.zeros((256,))
W4 = np.random.randn(1, 256)
b4 = np.zeros((1,))

# 定义模型
def model(X):
    out = conv1d(X, W1, b1, stride=1, padding=0)
    out = relu(out)
    out = max_pool1d(out, pool_size=2, stride=None)
    out = conv1d(out, W2, b2, stride=1, padding=0)
    out = relu(out)
    out = max_pool1d(out, pool_size=2, stride=None)
    out = out.reshape((-1, 256))
    out = linear(out, W3, b3)
    out = relu(out)
    out = linear(out, W4, b4)
    return out

# 定义损失函数和优化器
def mse_loss(pred, target):
    return np.mean(np.square(pred - target))

def sgd_optimizer(grads, lr=0.01):
    for param, grad in grads:
        param -= lr * grad

# 训练模型
epochs = 50
batch_size = 16
lr = 0.01
num_batches = X.shape[0] // batch_size
for epoch in range(epochs):
    for i in range(num_batches):
        X_batch = X[i*batch_size:(i+1)*batch_size]
        y_batch = y[i*batch_size:(i+1)*batch_size]
        
        # 前向传播
        pred = model(X_batch)
        loss = mse_loss(pred, y_batch)
        
        # 反向传播
        grads = []
        dL_dy = 2 * (pred - y_batch) / batch_size
        grads.append((W4, np.dot(model(X_batch).T, dL_dy)))
        grads.append((b4, np.sum(dL_dy, axis=0, keepdims=True)))
        dL_dx = np.dot(dL_dy, W4.T)
        dL_dx = relu(dL_dx)
        grads.append((W3, np.dot(model(X_batch).T, dL_dx)))
        grads.append((b3, np.sum(dL_dx, axis=0, keepdims=True)))
        dL_dx = dL_dx.reshape((-1, 64, 4))
        dL_dx = max_pool1d(dL_dx, pool_size=2, stride=None)
        dL_dx = dL_dx.reshape((-1, 256))
        dL_dx = relu(dL_dx)
        grads.append((W2, np.dot(max_pool1d(model(X_batch), pool_size=2, stride=None).T, dL_dx)))
        grads.append((b2, np.sum(dL_dx, axis=0, keepdims=True)))
        dL_dx = np.dot(dL_dx, W2.T)
        dL_dx = relu(dL_dx)
        grads.append((W1, np.dot(conv1d(X_batch, W1, b1, stride=1, padding=0).T, dL_dx)))
        grads.append((b1, np.sum(dL_dx, axis=0, keepdims=True)))
        
        # 更新模型参数
        sgd_optimizer(grads, lr=lr)
        
    print('Epoch: {}, Loss: {:.4f}'.format(epoch+1, loss))

# 预测结果并可视化
y_pred = model(X).flatten()
plt.plot(x, y, label='Ground Truth')
plt.plot(x, y_pred, label='Predictions')
plt.legend()
plt.show()

需要注意的是，这个示例代码仅仅是一个简单的实现，它可能不如 `tensorflow.keras` 库中的模块稳定或高效。如果你需要更复杂的模型或更高效的实现，建议考虑使用其他深度学习框架或尝试解决你的 `tensorflow.keras` 库调用问题。