Python Examples - Amazon Polly
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Python Examples

本指南提供了更多示例,其中一些是使用AWS SDK for Python (Boto)对 Amazon Polly 进行 API 调用的 Python 代码示例。我们建议您设置 Python 并测试以下部分中提供的示例代码。有关其他示例,请参阅 示例应用程序

Set Up Python and Test an Example (SDK)

要测试 Python 示例代码,您需要AWS SDK for Python (Boto)。有关说明,请参阅适用于 Python 的 AWS 开发工具包 (Boto3)

To test the example Python code

下面的 Python 代码示例将执行以下操作:

  • Uses the AWS SDK for Python (Boto) to send a SynthesizeSpeech request to Amazon Polly (by providing simple text as input).

  • Accesses the resulting audio stream in the response and saves the audio to a file (speech.mp3) on your local disk.

  • Plays the audio file with the default audio player for your local system.

将代码保存为一个文件 (example.py) 并运行。

"""Getting Started Example for Python 2.7+/3.3+""" from boto3 import Session from botocore.exceptions import BotoCoreError, ClientError from contextlib import closing import os import sys import subprocess from tempfile import gettempdir # Create a client using the credentials and region defined in the [adminuser] # section of the AWS credentials file (~/.aws/credentials). session = Session(profile_name="adminuser") polly = session.client("polly") try: # Request speech synthesis response = polly.synthesize_speech(Text="Hello world!", OutputFormat="mp3", VoiceId="Joanna") except (BotoCoreError, ClientError) as error: # The service returned an error, exit gracefully print(error) sys.exit(-1) # Access the audio stream from the response if "AudioStream" in response: # Note: Closing the stream is important because the service throttles on the # number of parallel connections. Here we are using contextlib.closing to # ensure the close method of the stream object will be called automatically # at the end of the with statement's scope. with closing(response["AudioStream"]) as stream: output = os.path.join(gettempdir(), "speech.mp3") try: # Open a file for writing the output as a binary stream with open(output, "wb") as file: file.write(stream.read()) except IOError as error: # Could not write to file, exit gracefully print(error) sys.exit(-1) else: # The response didn't contain audio data, exit gracefully print("Could not stream audio") sys.exit(-1) # Play the audio using the platform's default player if sys.platform == "win32": os.startfile(output) else: # The following works on macOS and Linux. (Darwin = mac, xdg-open = linux). opener = "open" if sys.platform == "darwin" else "xdg-open" subprocess.call([opener, output])

有关其他示例,包括示例应用程序,请参阅 示例应用程序