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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 '/home/prakhar/Documents/khg' -- we want user to provide a location inside which we will create a directory named "shard" in which everything will happen. So, just to demonstrate that the code will detect parent directory and create shard directory in it, we are using "../khg"
use  something like this - '/home/prakhar/Documents/khg' or '/home/prakhar/Documents/'  . Trailing slash is important otherwise "shard" directory will be created here -  '/home/prakhar/shard/' instead of '/home/prakhar/Documents/shard/'
Step1:  Now, user needs to provide only the file name, as file will now be saved inside "shard" directory.
Step2:  Now, for portability the user needs to use the "shard" folder
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Python Code:
index.output_prefix
Explanation: '/home/prakhar/Documents/khg' -- we want user to provide a location inside which we will create a directory named "shard" in which everything will happen. So, just to demonstrate that the code will detect parent directory and create shard directory in it, we are using "../khg"
use  something like this - '/home/prakhar/Documents/khg' or '/home/prakhar/Documents/'  . Trailing slash is important otherwise "shard" directory will be created here -  '/home/prakhar/shard/' instead of '/home/prakhar/Documents/shard/'
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index.save('prakhar')
index[vec_lsi]
index.output_prefix
Explanation: Now, user needs to provide only the file name, as file will now be saved inside "shard" directory.
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index2 = similarities.Similarity.load('/home/prakhar/Documents/test/shard/prakhar')
index2.output_prefix
index2[vec_lsi]
#index2.output_prefix
#index2.output_prefix = '/home/prakhar/Documents/gentestOLD/prakhar.x'
#index2.check_moved()
#index[vec_lsi]
Explanation: Now, for portability the user needs to use the "shard" folder
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