小编use*_*079的帖子

我有以下代码:

cap = cv2.VideoCapture("/full/path/to/video.mp4")

当我使用Python 3.6和3.7在MacOS 10.11.6上运行它时,程序将停止并显示错误消息Process finished with exit code 132 (interrupted by signal 4: SIGILL).路径有效(使用检查os.path.isfile)并打开网络摄像头流 VideoCapture(0)并不会引发错误.

我正在关注此 Sceneform SDK 教程 ( https://www.raywenderlich.com/5485-arcore-sceneform-sdk-getting-started )，并且在构建 Gradle 时遇到了一些问题。这是我的应用 build.gradle 文件：

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'


android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.kotlinfirstapp"
        minSdkVersion 24
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'


    implementation 'com.google.ar.ar:core:1.10.0'
    implementation 'com.google.ar.sceneform.ux:sceneform-ux:1.10.0'
    implementation 'com.google.ar.sceneform:core:1.10.0'
}

apply plugin: 'com.google.ar.sceneform.plugin'

sceneform.asset('sampledata/models/andy.obj', …

对 Flutter 来说相当新，所以这个问题可能听起来很明显，但是嘿\xe2\x80\xa6 我正在尝试使用 flutter_email_sender ( https://pub.dartlang.org/packages/flutter_email_sender ) 包将 .csv 文件附加到电子邮件。这是我的代码：

    Future<String> get _localPath async {\n        final directory = await getApplicationDocumentsDirectory();\n\n        return directory.absolute.path;\n    }\n\n    Future<int> export(String csv) {\n        final String path = await _localPath + "/" + file_name;\n        File file = File(path);\n        file.writeAsString(csv);\n\n        File readFile = File(path);\n        print("content: ${await readFile.readAsString()}");\n        // the two lines above print the content of the file, as expected\n\n        final Email email = Email(\n            body: \'blah blah\',\n            subject: \'blah blaaaah\',\n            recipients: ["a@a.com"],\n            attachmentPaths: [file.path],\n        );\n\n …