Update file function

[X-Raym]

A function to update a file rather than rewriting it entirely would be far quicker for huge files.

Some chunk could be just nulled and duplicated at the end.

[rudrathegreat]

Question - What exactly are you trying to save in the file?

If the answer is audio or something to do with audio, then maybe try doing this -

import numpy as np
from scipy.io.wavfile import write

sps = 44100  # Samples per Second
freq = 440  # Frequency is Hz
time = 5  # Duration of the audio in seconds
amp = 0.3

# Create the Audio

samples = np.arange(time*sps)
waveform = amp * np.sin(2 * np.pi * samples * freq / sps) # Create Waveform
waveform_int = np.int16(waveform)

write('wave.wav', sps, waveform_int)
print('Wavefile has been saved')

This is a simple program creating a sine wave of freq 440.Hz and a duration of 5 seconds. It then computes the waveform , puts it in an array, decreases each of the values in the array, then saves it in a .wav file giving the samples per second and the data itself.