import sys

filename = open("/Users/xxx/documents/python/dump.txt", 'r+')

filename.truncate()

sys.stdout = filename

print('Hello')

print('Testing')

filename.close()

with open("/Users/xxx/documents/python/dump.txt") as file:
    data = file.read()
    print(file)

import sys

filename = open('/media/elis/500/elis/workspace/so', 'w')

# filename.truncate()  # mode 'w' truncates file

sys.stdout = filename

print('Hello')

print('Testing')

filename.close()