Upload Dataset on Google Colaboratory.

upload_and_read_colaboratory.py

#Uploading the Dataset 
from google.colab import files
uploaded = files.upload()

#Save uploaded file on the Virtual Machine's 
#Thanks to user3800642 from StackOverflow 

with open("breast_cancer.csv", 'w') as f:
    f.write(uploaded[uploaded.keys()[0]])

Hello Sagar

Try this

from google.colab import files

uploaded = files.upload()

for fn in uploaded.keys():
print('User uploaded file "{name}" with length {length} bytes'.format(
name=fn, length=len(uploaded[fn])))

from documentation as above code does not fec any bytestream