batch_size = 2# 256 def get_dataloader_workers(): #@save """使用4个进程来读取数据.""" return 4 train_iter = data.DataLoader(mnist_train, batch_size, shuffle=True, num_workers=get_dataloader_workers()) timer = d2l.Timer() for X, y in tr…

RuntimeError: DataLoader worker (pid 18255) is killed by signal: Killed. 通过观察内存发现,数据加载过程中内存会被耗尽.…

a = {':0} for b in list(a.keys()): if a[b] == 0: del a[b] print(a) 报错是因为在字典迭代期间改变字典大小 我们可以通过取出字典的键值,在转化为列表,这样在for循环期间就可以删除了…

1．问题:在本地用matplotlib绘图可以,但是在ssh远程绘图的时候会报错 RuntimeError: Invalid DISPLAY variable 2．原因:matplotlib的默认backend是TkAgg,而FltkAgg, GTK, GTKAgg, GTKCairo, TkAgg , Wx or WxAgg这几个backend都要求有GUI图形界面的,所以在ssh操作的时候会报错． import matplotlib.pyplot as plt Backend TkAgg i…

1,首先下载合适的tesseract-ocr的版本 2,然后安装到这一步注意要勾选这一项来安装OCR识别支持的语言包,这样OCR就可以识别多国语言,然后就可以一直点击下一步完成安装. 3,安装tesserocr库,如果在pycharm里面的设置选项里直接安装出错,可以使用whl安装,点击这里下载合适版本的whl文件,放在python安装目录下的\Lib\site-packages文件夹里面,然后在这里打开cmd,输入命令pip install (刚才下载的whl文件名,注意文件格式也要),就可以…

Django报错:提交表单报错---RuntimeError: You called this URL via POST, but the URL doesn’t end in a slash and you have APPEND_SLASH set. django提交表单的时候报错 RuntimeError: You called this URL via POST, but the URL doesn’t end in a slash and you have APPEND_SLASH s…

Django:提交表单报错:RuntimeError: You called this URL via POST, but the URL doesn’t end in a slash and you have APPEND_SLASH set. -解决方法: - RuntimeError: You called this URL via POST, but the URL doesn’t end in a slash and you have APPEND_SLASH set. 提示form的…

Python报错总结: 常见异常 1,NameError: name 'a' is not defined:未定义函数名             2,IndentationError: unindent does not match any outer indentation level :代码缩进问题 3,IndentationError: unexpected indent:代码缩进问题 4,TypeError: %d format: a number is required, not st…

Python报错module 'scipy.misc' has no attribute 'imresize' 解决办法: 安装Pillow包,命令如下: pip install Pillow 然后重启python环境 Python报错module 'scipy.misc' has no attribute 'imread' 解决办法: 大部分解决办法都是说没有安装PIL第三方库,库名现在为Pillow,推荐直接使用命令pip install Pillow进行安装,但是我的问题并没有因此得到解决…

selenium python 报错如下: raise exception_class(message, screen, stacktrace)selenium.common.exceptions.WebDriverException: Message: Expected browser binary location, but unable to find binary in default location, no 'moz:firefoxOptions.binary' capability…