Creating a Tuple made of variable strings

The following code works:

image_files=['imgpy1.png','imgpy2.png']
clip = moviepy.video.io.ImageSequenceClip.ImageSequenceClip(image_files, fps=20)

But I have 200 filenames ‘imgpy1.png’, ‘imgpy2.png’ and so on. How do I create an object called image_files, that contain these file names. I tried to create an array of strings:

flist=[]
flist=list(map(str,flist))
flist.append['imagepy1.png']
flist.append['imagepy2.png']

but that does not work. I get the error message

Traceback (most recent call last):
  File "C:\Users\vince\image.py", line 53, in <module>
    flist.append['imagepy1.png']
TypeError: 'builtin_function_or_method' object is not subscriptable

I am new to Python and can’t figure out how to get an array or Tuple of strings. I’ve tried for 2-3 hours to non avail, at least 40 different ways including stuff I read online that don’t work on my laptop. In the end, I am only interested in passing an argument to the video function that (1) does not crash the Python interpreter and (2) can be digested by the video function. So far, I am stuck with (1). But in the end I’m looking at solving (2). I don’t care if it’s an array, a list, a Tuple or anything else, as long as it works.

>Solution :

I think append function is not correct.

flist.append('imagepy1.png')   # not brackets
flist.append('imagepy2.png')