我使用此代码在iOS自定义相机应用程序中实现Tap-to-Focus,但它无法正常工作.这是代码
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
let touchPer = touches.anyObject() as UITouch
let screenSize = UIScreen.mainScreen().bounds.size
var focus_x = touchPer.locationInView(self.view).x / screenSize.width
var focus_y = touchPer.locationInView(self.view).y / screenSize.height
if let device = captureDevice {
if(device.lockForConfiguration(nil)) {
device.focusMode = AVCaptureFocusMode.ContinuousAutoFocus
device.focusPointOfInterest = CGPointMake(focus_x, focus_y)
device.exposureMode = AVCaptureExposureMode.ContinuousAutoExposure
device.unlockForConfiguration()
}
}
}
Run Code Online (Sandbox Code Playgroud) import mysql.connector
config = {
'user' : 'root',
'passwd' : ' ',
'host' : 'localhost',
'raise_on_warnings' : True,
'use_pure' : False,
}
cnx = mysql.connector.connect(**config)
cnx.close()
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我用这段代码来检查我使用mysql提供的安装程序安装的mysql包
我在终端运行文件,结果是,
Traceback (most recent call last):
File "/Users/Krishna/Documents/check.py", line 1, in <module>
import mysql.connector
ImportError: No module named 'mysql'
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非常感谢帮助.
mysql macos mysql-connector python-3.x mysql-connector-python
我已使用此代码将pdf转换为文本。
input1 = '//Home//Sai Krishna Dubagunta.pdf'
output = '//Home//Me.txt'
os.system(("pdftotext %s %s") %( input1, output))
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我已经创建了Home目录,并将源文件粘贴到其中。
我得到的输出是
1
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并没有创建带有.txt的文件。问题出在哪里?