To convert text to speech through Baidu API, you need to register a Baidu developer account and create an application, and then get the corresponding APIKey and SecretKey. Next you can use Baidu's speech synthesis API. The specific steps are as follows:

1. Install Baidu's speech synthesis library:

`` carnival

pipinstallbaidu-aip

```

2. Import the required library and set APIKey and SecretKey:

``` python skin

fromaipimportAipSpeech

APP_ID=' your AppID'

API_KEY=' your ApiKey'

SECRET_KEY=' Your secret key'

client=AipSpeech(APP_ID，API_KEY，SECRET_KEY)

```

3. Use Baidu's speech synthesis API to convert the text into a speech file:

``` python skin

deftext_to_speech(text，file_name):

result=client.synthesis(text，' zh '， 1，{

' vol':5，

Every minute: 4

})

ifnotisinstance(result，dict):

Withopen (file name,' wb')asf:

F.write (result)

Otherwise:

Print ("Error:", result)

Text= "Hello, this is a test"

file_name="output.mp3 "

Text-to-speech conversion (text, file name)

```

This code will convert the text "Hello, this is a test" into a voice file and save it as "output.mp3". You can modify the text and file name as needed.