title: BUILD FAILURE: No main.py(o) found in your app directory
body: <p>I am a beginner in kivy and trying to build an app using Ubunto microsoft app on windows 10
  any kind of help will be appreciated.</p>
  
  <p>Although I put it in same location of the buildozer.spec I keep getting this error :</p>
  
  <p>BUILD FAILURE: No main.py(o) found in your app directory. This file must exist to act as the entry point for you app. If your app is started by a file with a different name, rename it to main.py or add a main.py that loads it.</p>
  
  <p>My source code:</p>
  
  <pre><code>from kivy.app import App
  from kivy.uix.label import Label
  
  class MainApp(App):
      def build(self):
          label = Label(text='Hello from Kivy',
                        size_hint=(.5, .5),
                        pos_hint={'center_x': .5, 'center_y': .5})
  
          return label
  
  if __name__ == '__main__':
      app = MainApp()
      app.run()
  </code></pre>
  
  <p>my error log:</p>
  
  <pre><code># project.properties updated
  # Gradle project detected, copy files /mnt/c/Users/MOHAMED/.PyCharm2018.1/config/scratches/.buildozer/android/platform/build-armeabi-v7a/dists/myapp__armeabi-v7a/src/main/java
  # Run '/usr/bin/python3 -m pythonforandroid.toolchain apk --debug --bootstrap=sdl2 --dist_name myapp --name Application --version 0.1 --package org.test.myapp --minsdk 21 --ndk-api 21 --private /mnt/c/Users/MOHAMED/.PyCharm2018.1/config/scratches/.buildozer/android/app --android-entrypoint org.kivy.android.PythonActivity --android-apptheme @android:style/Theme.NoTitleBar --orientation sensor --window --copy-libs --arch armeabi-v7a --color=always --storage-dir="/mnt/c/Users/MOHAMED/.PyCharm2018.1/config/scratches/.buildozer/android/platform/build-armeabi-v7a" --ndk-api=21'
  # Cwd /mnt/c/Users/MOHAMED/.PyCharm2018.1/config/scratches/.buildozer/android/platform/python-for-android
  [INFO]:    Will compile for the following archs: armeabi-v7a
  [INFO]:    Found Android API target in $ANDROIDAPI: 27
  [INFO]:    Available Android APIs are (27)
  [INFO]:    Requested API target 27 is available, continuing.
  [INFO]:    Found NDK dir in $ANDROIDNDK: /home/brad/.buildozer/android/platform/android-ndk-r19b
  [INFO]:    Found NDK version 19b
  [INFO]:    Getting NDK API version (i.e. minimum supported API) from user argument
  [INFO]:    Found virtualenv at /usr/local/bin/virtualenv
  [INFO]:    ccache is missing, the build will not be optimized in the future.
  [INFO]:    Found the following toolchain versions: ['4.9']
  [INFO]:    Picking the latest gcc toolchain, here 4.9
  [INFO]:    Of the existing distributions, the following meet the given requirements:
  [INFO]:         myapp: min API 21, includes recipes (hostpython3, libffi, openssl, sdl2_image, sdl2_mixer, sdl2_ttf, sqlite3, python3, sdl2, setuptools, six, pyjnius, android, kivy, certifi), built for archs (armeabi-v7a)
  [INFO]:    myapp has compatible recipes, using this one
  [INFO]:    Of the existing distributions, the following meet the given requirements:
  [INFO]:         myapp: min API 21, includes recipes (hostpython3, libffi, openssl, sdl2_image, sdl2_mixer, sdl2_ttf, sqlite3, python3, sdl2, setuptools, six, pyjnius, android, kivy, certifi), built for archs (armeabi-v7a)
  [INFO]:    myapp has compatible recipes, using this one
  [INFO]:    -&gt; directory context /mnt/c/Users/MOHAMED/.PyCharm2018.1/config/scratches/.buildozer/android/platform/build-armeabi-v7a/dists/myapp__armeabi-v7a
  WARNING: Received a --sdk argument, but this argument is deprecated and does nothing.
  BUILD FAILURE: No main.py(o) found in your app directory. This
  file must exist to act as the entry point for you app. If your app is
  started by a file with a different name, rename it to main.py or add a
  main.py that loads it.
  </code></pre>
  
  <p>I tried to clean my Buildozer and it didn't work and i put my app directory to the buildozer.spec but it didn't work as well</p>
  
  <p>Buildozer.spec:</p>
  
  <pre><code>[app]
  
  # (str) Title of your application
  title = Application
  
  # (str) Package name
  package.name = myapp
  
  # (str) Package domain (needed for android/ios packaging)
  package.domain = org.test
  
  # (str) Source code where the main.py live
  source.dir = C:/Users/MOHAMED/.PyCharm2018.1/config/scratches
  
  # (list) Source files to include (let empty to include all the files)
  source.include_exts = py,png,jpg,kv,atlas
  
  # (list) List of inclusions using pattern matching
  #source.include_patterns = assets/*,images/*.png
  
  # (list) Source files to exclude (let empty to not exclude anything)
  #source.exclude_exts = spec
  version int method 2
  # (list) List of directory to exclude (let empty to not exclude anything)
  #source.exclude_dirs = tests, bin
  
  # (list) List of exclusions using pattern matching
  #source.exclude_patterns = license,images/*/*.jpg
  
  (str) Application versioning (method 2)
  version = 0.1
  
  # (str) Application versioning (method 2)
  # version.regex = __version__ = ['"](.*)['"]
  # version.filename = %(source.dir)s/main.py
  
  # (list) Application requirements
  # comma separated e.g. requirements = sqlite3,kivy
  requirements = kivy
  
  # (str) Custom source folders for requirements
  # Sets custom source for any requirements with recipes
  # requirements.source.kivy = ../../kivy
  
  # (list) Garden requirements
  #garden_requirements =
  
  # (str) Presplash of the application
  #presplash.filename = %(source.dir)s/data/presplash.png
  
  # (str) Icon of the application
  #icon.filename = %(source.dir)s/data/icon.png
  
  # (str) Supported orientation (one of landscape, sensorLandscape, portrait or all)
  orientation = all
  
  # (list) List of service to declare
  #services = NAME:ENTRYPOINT_TO_PY,NAME2:ENTRYPOINT2_TO_PY
  
  #
  # OSX Specific
  #
  
  #
  # author = © Copyright Info
  
  # change the major version of python used by the app
  osx.python_version = 3
  
  # Kivy version to use
  osx.kivy_version = 1.9.1
  
  #
  # Android specific
  #
  
  # (bool) Indicate if the application should be fullscreen or not
  fullscreen = 0
  
  # (string) Presplash background color (for new android toolchain)
  # Supported formats are: #RRGGBB #AARRGGBB or one of the following names:
  # red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray,
  # darkgray, grey, lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy,
  # olive, purple, silver, teal.
  #android.presplash_color = #FFFFFF
  
  # (list) Permissions
  #android.permissions = INTERNET
  
  # (int) Target Android API, should be as high as possible.
  #android.api = 27
  
  # (int) Minimum API your APK will support.
  #android.minapi = 21
  
  # (int) Android SDK version to use
  #android.sdk = 20
  
  # (str) Android NDK version to use
  #android.ndk = 17c
  
  # (int) Android NDK API to use. This is the minimum API your app will support, it should usually match android.minapi.
  #android.ndk_api = 17
  
  # (bool) Use --private data storage (False) or --dir public storage (True)
  #android.private_storage = True
  
  # (str) Android NDK directory (if empty, it will be automatically downloaded.)
  #android.ndk_path =C:/Users/MOHAMED/.PyCharm2018.1/config/scratches/.buildozer/android\platform/--ndk-api=21
  
  # (str) Android SDK directory (if empty, it will be automatically downloaded.)
  #android.sdk_path =
  
  # (str) ANT directory (if empty, it will be automatically downloaded.)
  #android.ant_path =
  
  # (bool) If True, then skip trying to update the Android sdk
  # This can be useful to avoid excess Internet downloads or save time
  # when an update is due and you just want to test/build your package
  # android.skip_update = False
  
  # (bool) If True, then automatically accept SDK license
  # agreements. This is intended for automation only. If set to False,
  # the default, you will be shown the license when first running
  # buildozer.
  # android.accept_sdk_license = False
  
  # (str) Android entry point, default is ok for Kivy-based app
  #android.entrypoint = org.renpy.android.PythonActivity
  
  # (str) Android app theme, default is ok for Kivy-based app
  # android.apptheme = "@android:style/Theme.NoTitleBar"
  
  # (list) Pattern to whitelist for the whole project
  #android.whitelist =
  
  # (str) Path to a custom whitelist file
  #android.whitelist_src =
  
  # (str) Path to a custom blacklist file
  #android.blacklist_src =
  
  # (list) List of Java .jar files to add to the libs so that pyjnius can access
  # their classes. Don't add jars that you do not need, since extra jars can slow
  # down the build process. Allows wildcards matching, for example:
  # OUYA-ODK/libs/*.jar
  #android.add_jars = foo.jar,bar.jar,path/to/more/*.jar
  
  # (list) List of Java files to add to the android project (can be java or a
  # directory containing the files)
  #android.add_src =
  
  # (list) Android AAR archives to add (currently works only with sdl2_gradle
  # bootstrap)
  #android.add_aars =
  
  # (list) Gradle dependencies to add (currently works only with sdl2_gradle
  # bootstrap)
  #android.gradle_dependencies =
  
  # (list) add java compile options
  # this can for example be necessary when importing certain java libraries using the 'android.gradle_dependencies' option
  # see https://developer.android.com/studio/write/java8-support for further information
  # android.add_compile_options = "sourceCompatibility = 1.8", "targetCompatibility = 1.8"
  
  # (list) Gradle repositories to add {can be necessary for some android.gradle_dependencies}
  # please enclose in double quotes 
  # e.g. android.gradle_repositories = "maven { url 'https://kotlin.bintray.com/ktor' }"
  #android.add_gradle_repositories =
  
  # (list) packaging options to add 
  # see https://google.github.io/android-gradle-dsl/current/com.android.build.gradle.internal.dsl.PackagingOptions.html
  # can be necessary to solve conflicts in gradle_dependencies
  # please enclose in double quotes 
  # e.g. android.add_packaging_options = "exclude 'META-INF/common.kotlin_module'", "exclude 'META-INF/*.kotlin_module'"
  #android.add_gradle_repositories =
  
  # (list) Java classes to add as activities to the manifest.
  #android.add_activities = com.example.ExampleActivity
  
  # (str) OUYA Console category. Should be one of GAME or APP
  # If you leave this blank, OUYA support will not be enabled
  #android.ouya.category = GAME
  
  # (str) Filename of OUYA Console icon. It must be a 732x412 png image.
  #android.ouya.icon.filename = %(source.dir)s/data/ouya_icon.png
  
  # (str) XML file to include as an intent filters in &lt;activity&gt; tag
  #android.manifest.intent_filters =
  
  # (str) launchMode to set for the main activity
  #android.manifest.launch_mode = standard
  
  # (list) Android additional libraries to copy into libs/armeabi
  #android.add_libs_armeabi = libs/android/*.so
  #android.add_libs_armeabi_v7a = libs/android-v7/*.so
  #android.add_libs_arm64_v8a = libs/android-v8/*.so
  #android.add_libs_x86 = libs/android-x86/*.so
  #android.add_libs_mips = libs/android-mips/*.so
  
  # (bool) Indicate whether the screen should stay on
  # Don't forget to add the WAKE_LOCK permission if you set this to True
  #android.wakelock = False
  
  # (list) Android application meta-data to set (key=value format)
  #android.meta_data =
  
  # (list) Android library project to add (will be added in the
  # project.properties automatically.)
  #android.library_references =
  
  # (list) Android shared libraries which will be added to AndroidManifest.xml using &lt;uses-library&gt; tag
  #android.uses_library =
  
  # (str) Android logcat filters to use
  #android.logcat_filters = *:S python:D
  
  # (bool) Copy library instead of making a libpymodules.so
  #android.copy_libs = 1
  
  # (str) The Android arch to build for, choices: armeabi-v7a, arm64-v8a, x86, x86_64
  android.arch = armeabi-v7a
  
  #
  # Python for android (p4a) specific
  #
  
  # (str) python-for-android fork to use, defaults to upstream (kivy)
  #p4a.fork = kivy
  
  # (str) python-for-android branch to use, defaults to master
  #p4a.branch = stable
  
  # (str) python-for-android git clone directory (if empty, it will be automatically cloned from github)
  #p4a.source_dir =
  
  # (str) The directory in which python-for-android should look for your own build recipes (if any)
  #p4a.local_recipes =
  
  # (str) Filename to the hook for p4a
  #p4a.hook =
  
  # (str) Bootstrap to use for android builds
  # p4a.bootstrap = sdl2
  
  # (int) port number to specify an explicit --port= p4a argument (eg for bootstrap flask)
  #p4a.port =
  
  
  #
  # iOS specific
  #
  
  # (str) Path to a custom kivy-ios folder
  #ios.kivy_ios_dir = ../kivy-ios
  # Alternately, specify the URL and branch of a git checkout:
  ios.kivy_ios_url = https://github.com/kivy/kivy-ios
  ios.kivy_ios_branch = master
  
  # Another platform dependency: ios-deploy
  # Uncomment to use a custom checkout
  #ios.ios_deploy_dir = ../ios_deploy
  # Or specify URL and branch
  ios.ios_deploy_url = https://github.com/phonegap/ios-deploy
  ios.ios_deploy_branch = 1.7.0
  
  # (str) Name of the certificate to use for signing the debug version
  # Get a list of available identities: buildozer ios list_identities
  #ios.codesign.debug = "iPhone Developer: &lt;lastname&gt; &lt;firstname&gt; (&lt;hexstring&gt;)"
  
  # (str) Name of the certificate to use for signing the release version
  #ios.codesign.release = %(ios.codesign.debug)s
  
  
  [buildozer]
  
  # (int) Log level (0 = error only, 1 = info, 2 = debug (with command output))
  log_level = 2
  
  # (int) Display warning if buildozer is run as root (0 = False, 1 = True)
  warn_on_root = 1
  
  # (str) Path to build artifact storage, absolute or relative to spec file
  # build_dir = ./.buildozer
  
  # (str) Path to build output (i.e. .apk, .ipa) storage
  # bin_dir = ./bin
  
  #    -----------------------------------------------------------------------------
  #    List as sections
  #
  #    You can define all the "list" as [section:key].
  #    Each line will be considered as a option to the list.
  #    Let's take [app] / source.exclude_patterns.
  #    Instead of doing:
  #
  #[app]
  #source.exclude_patterns = license,data/audio/*.wav,data/images/original/*
  #
  #    This can be translated into:
  #
  #[app:source.exclude_patterns]
  #license
  #data/audio/*.wav
  #data/images/original/*
  #
  
  
  #    -----------------------------------------------------------------------------
  #    Profiles
  #
  #    You can extend section / key with a profile
  #    For example, you want to deploy a demo version of your application without
  #    HD content. You could first change the title to add "(demo)" in the name
  #    and extend the excluded directories to remove the HD content.
  #
  #[app@demo]
  #title = My Application (demo)
  #
  #[app:source.exclude_patterns@demo]
  #images/hd/*
  #
  #    Then, invoke the command line with the "demo" profile:
  #
  #buildozer --profile demo android debug
  
  </code></pre>