Delay between different function calls

user_9182211 0
Viewed 669

I have a question about adding delay after calling various functions.

Let's say I've function like:

def my_func1():
    print("Function 1")

def my_func2():
    print("Function 2")

def my_func3():
    print("Function 3")

Currently I've added delay between invoking them like below:

delay = 1
my_func1()
time.sleep(delay)
my_func2()
time.sleep(delay)
my_func3()
time.sleep(delay)

As you can see I needed a few times time.sleep, which I would like to avoid. Using decorator is also not an option, since it might be that I would like to avoid delay when calling one of this function not in a group.

Do you have any tip how to beautify this?

python
4 Answers

You can define something like this:

def delay_it(delay, fn, *args, **kwargs):
    return_value = fn(*args, **kwargs)
    time.sleep(delay)

then

a = delay_it(1, my_func1, "arg1", arg2="arg2")
b = delay_it(1, my_func2, "arg3")
...
user_20111470

I've tested this based on "How to Make Decorators Optionally Turn On Or Off" (How to Make Decorators Optionally Turn On Or Off)

from time import sleep

def funcdelay(func):
    def inner():
        func()
        print('inner')
        sleep(1)           
    inner.nodelay = func
    return inner 

@funcdelay
def my_func1():
    print("Function 1")

@funcdelay
def my_func2():
    print("Function 2")

@funcdelay
def my_func3():
    print("Function 3")
my_func1()
my_func2()
my_func3()
my_func1.nodelay()
my_func2.nodelay()
my_func3.nodelay()

Output:

Function 1
inner
Function 2
inner
Function 3
inner
Function 1
Function 2
Function 3

You can see that it can bypass the delay.

user_156705270

Not sure if I know what you mean but you could try:

functions = [my_func1, my_func2, my_func3]
for func in functions:
    func()
    time.sleep(1)
user_87083640

It's not a good way to handle delay in a function; because each function should do only one thing.
Dont't do this:

def my_func(delay):
    # do stuff
    if delay>0:
       time.sleep(delay)

Try to make a delay handler function and put suitable delay after each function you pass to it.
Try this:

def delay_handler(functions_list,inputs_list,delay_list):
    for function,cur_input,delay in zip(functions_list,inputs_list,delay_list):
        function(*cur_input)  
        time.sleep(delay)

Tip 1: Zip will iterate throw each list (any iterable) simultaneously; first elements in inputs_list and delay_list are for first function in function_list and etc.
Tip 2: The '*' behind a list will unpack it.

user_141592530
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