Passing a 'spider' argument to ExecutionEngine.download is deprecated
时间: 2023-06-13 21:03:29 浏览: 112
这个警告是 Scrapy 框架中的一个问题,它通常出现在下载器中。这个警告提示你使用了一个过时的参数,建议你使用新的参数来替代它。如果你想要消除这个警告,可以尝试升级 Scrapy 框架,或者在下载器中使用新的参数。具体来说,你可以在下载器中使用 `spider_loader` 参数来代替 `spider` 参数,例如:
```
from scrapy import SpiderLoader
spider_loader = SpiderLoader.from_settings(settings)
spider = spider_loader.load(spider_name)
engine = ExecutionEngine(
scrapy_settings,
spider=spider,
spider_loader=spider_loader,
)
```
这样就可以避免使用过时的 `spider` 参数,从而避免出现警告。
相关问题
TypeError: Passing a bool to header is invalid. Use header=None for no header or header=int or list-like of ints to specify the row(s) making up the column names
这个错误通常是因为在读取文件时,将布尔值传递给了 header 参数。header 参数应该是一个整数或者列表,用于指定哪些行是列名。如果不需要列名,则可以将 header 参数设置为 None。
例如,如果你使用 pandas 库读取一个 CSV 文件,可以这样写:
```
import pandas as pd
df = pd.read_csv('data.csv', header=None) # 没有列名
```
或者如果你的 CSV 文件第一行是列名,可以这样写:
```
df = pd.read_csv('data.csv', header=0) # 第一行是列名
```
请根据你的具体情况修改代码。
'startActivityForResult(android.content.Intent, int)' is deprecated
`startActivityForResult(Intent, int)` is indeed deprecated since Android 11 (API level 30). It means that this method will no longer be supported in future versions of Android. Instead, you should use the `registerForActivityResult` method, which is a more modern way to handle activities that return results.
Here's an example of how to use `registerForActivityResult`:
```
val someActivityResultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
if (result.resultCode == Activity.RESULT_OK) {
// Handle the result
val data: Intent? = result.data
}
}
// Call the activity with startActivityForResult
val intent = Intent(this, SomeActivity::class.java)
someActivityResultLauncher.launch(intent)
```
With this approach, you create an instance of `ActivityResultLauncher` by calling `registerForActivityResult`, passing in an instance of `ActivityResultContracts.StartActivityForResult`. You then define a lambda that will be called when the activity returns a result. Finally, you call `someActivityResultLauncher.launch(intent)` to start the activity and wait for the result to come back.
Note that `registerForActivityResult` is only available in AndroidX libraries, so if you're not already using them, you'll need to migrate your project to AndroidX before you can use this method.