Python time delay: How to implement a delay function?

├Źndice
  1. Introduction
  2. Using the time.sleep() function
  3. Custom delay function
  4. Conclusion

Introduction

When writing Python code, it is often necessary to add a delay or sleep function to pause the execution of the program for a certain amount of time. In this article, we will discuss how to implement a delay function in Python.

Using the time.sleep() function

The easiest way to implement a delay function in Python is to use the built-in time.sleep() function. This function takes a single argument, which is the number of seconds to pause the execution of the program.

Here is an example of how to use the time.sleep() function to pause the program for 5 seconds:


import time

print("Before delay")
time.sleep(5)
print("After delay")

In this example, the program will print "Before delay", pause for 5 seconds, and then print "After delay".

Custom delay function

If you need more control over the delay time, you can create a custom delay function using the time.time() function. This function returns the current time in seconds since the epoch (January 1, 1970, 00:00:00 UTC).

Here is an example of how to create a custom delay function that pauses the program for a specified number of milliseconds:


import time

def delay(milliseconds):
    start_time = time.time()
    while (time.time() - start_time) * 1000 < milliseconds:
        pass

print("Before delay")
delay(5000)
print("After delay")

In this example, the delay() function takes a single argument, which is the number of milliseconds to pause the program. The function calculates the start time using time.time(), and then enters a loop that continues until the specified delay time has elapsed.

Conclusion

In conclusion, there are several ways to implement a delay function in Python. The easiest way is to use the built-in time.sleep() function, while a custom delay function can be created using time.time() if more control is needed.

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