I am trying to put many numpy files to get one big numpy file, I tried to follow those two links [Append multiple numpy files to one big numpy file in python](https://stackoverflow.com/questions/42160582/append-multiple-numpy-files-to-one-big-numpy-file-in-python/42165201#42165201) and [Python append multiple files in given order to one big file](https://stackoverflow.com/questions/5509872/python-append-multiple-files-in-given-order-to-one-big-file) this is what I did:

```
import matplotlib.pyplot as plt 
import numpy as np
import glob
import os, sys
fpath ="/home/user/Desktop/OutFileTraces.npy"
npyfilespath ="/home/user/Desktop/test"   
os.chdir(npyfilespath)
with open(fpath,'wb') as f_handle:
    for npfile in glob.glob("*.npy"):
        # Find the path of the file
        filepath = os.path.join(npyfilespath, npfile)
        print filepath
        # Load file
        dataArray= np.load(filepath)
        print dataArray
        np.save(f_handle,dataArray)
        dataArray= np.load(fpath)
        print dataArray

```

An example of the result that I have:

```
/home/user/Desktop/Trace=96
[[ 0.01518007  0.01499514  0.01479736 ..., -0.00392216 -0.0039761
  -0.00402747]]
[[-0.00824758 -0.0081808  -0.00811402 ..., -0.0077236  -0.00765425
  -0.00762086]]
/home/user/Desktop/Trace=97
[[ 0.00614908  0.00581004  0.00549154 ..., -0.00814741 -0.00813457
  -0.00809347]]
[[-0.00824758 -0.0081808  -0.00811402 ..., -0.0077236  -0.00765425
  -0.00762086]]
/home/user/Desktop/Trace=98
[[-0.00291786 -0.00309509 -0.00329287 ..., -0.00809861 -0.00797789
  -0.00784175]]
[[-0.00824758 -0.0081808  -0.00811402 ..., -0.0077236  -0.00765425
  -0.00762086]]
/home/user/Desktop/Trace=99
[[-0.00379887 -0.00410453 -0.00438963 ..., -0.03497837 -0.0353842
  -0.03575151]]
[[-0.00824758 -0.0081808  -0.00811402 ..., -0.0077236  -0.00765425
  -0.00762086]

```

this line represents the first trace: 

```
[[-0.00824758 -0.0081808  -0.00811402 ..., -0.0077236  -0.00765425
      -0.00762086]]

```

It is repeated all the time.

I asked the second question two days ago, at first I think that I had the best answer, but after trying to model to print and lot the final file 'OutFileTraces.npy' I found that my code:

1/ doesn't print numpy files from folder 'test' with respecting their order(trace0,trace1, trace2,...)

2/ saves only the last trace in the file, I mean by that when print or plot the OutFileTraces.npy, I found just one trace , it is the first one.

So I need to correct my code because really I am blocked. I would be very grateful if you could help me. 

Thanks in advance.