You can write JSON to a file using the json.dump() function from the JSON module combined with file handling in Python. In thisexample, we open a file in writing mode. If the file doesn't exist, it will be created. The json.dump() function converts the Python dictionary into a JSON string, which is then saved in the file.
This exampleillustrates how to read from both a string and a JSON file. Initially, we have a JSON string stored in the variable 'jsonString'. We convert this JSON string into a Python dictionary using json.loads() method, which is then stored in the variable 'jsonDict'. Next, we read a JSON string stored in a file using json.loads(). To achieve this, we first convert the JSON file into a string using file handling, similar to the previous example. Then, we convert it into a string using the read() function. The subsequent steps mirror those followed earlier, utilizing the json.loads() method.
Timers allow you to execute one event in the future. You tell the timer how long you want to wait and it provides a channel to be notified at that time. The first timer will wait for 3 seconds. <-firstTimer.C blocks the timer C channel until a message (current time) is sent indicating that the timer has expired. If you just want to wait, you can use time.Sleep. One reason a timer can be useful is that you can cancel the timer before it expires. The first timer expires 3s after the program starts, but the second is stopped before it expires.