File name customers$\_$data and value new$\_$customer are read from input. Perform the following tasks:

Open the file customers$\_$data with the $\text{'}$at$\text{'}$ update mode for reading and appending at the same time. Assign customers$\_$file

with the opened file.

Write new$\_$customer to customers$\_$file without overwriting any existing contents.

Call customers$\_$file's flush$().$

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Note: The challenge activity will read and output the file named customers$\_$data.

customers$\_$data $=$ input $()$

new$\_$customer $=$ input $()$

$\text{'}\text{'}\text{'}$ Your code goes here $\text{'}\text{'}\text{'}$

# When a file is in update mode,

# seek $(0,0)$ rewinds the file to enable reading from the beginning

customers$\_$file.seek $(0,0)$

file$\_$data $=$ customers$\_$file.read $()$

print$($file$\_$data$)$

customers$\_$file.close$()$