get rid of the sys.path.append

use PYTHONPATH instead

Author: alexott

.gitignore

@@ -1,3 +1,5 @@
 /ch11/stanfordnlp_resources/
 *.pyc
 /ch11/masc_word_sense_sentence_corpus.V1.0/
+/.venv/
+/.idea/

README.md

@@ -31,6 +31,12 @@ Once created it needs to be activated
 source .venv/bin/activate
 ```
 
+You also need to set the `PYTHONPATH` environment variable, so Python will able to find auxiliary libraries (in the top-level directory of the project):
+
+```sh
+export PYTHONPATH="$(pwd):$PYTHONPATH"
+```
+
 The commands above run on Linux/Unix sheels for more details and for other operating systems refers to the Python documentation available [here](https://docs.python.org/3/library/venv.html).
 
 As reminder the environment must be activated everytime a new shel is opened. 

ch05/recommendation/collaborative_filtering/recommender.py

@@ -4,8 +4,6 @@
 
 from neo4j import GraphDatabase, Transaction
 
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..', '..', '..')))
 from util.fixed_heapq import FixedHeap
 from util.sparse_vector import cosine_similarity
 

ch06/recommendation/session_based_recommendation_iknn_approach.py

@@ -1,8 +1,6 @@
 import numpy as np
 from neo4j import GraphDatabase
 
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..', '..')))
 from util.sparse_vector import cosine_similarity
 
 

ch06/recommendation/session_based_recommendation_iknn_approach_advanced.py

@@ -2,9 +2,6 @@
 from neo4j import GraphDatabase
 import time
 
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..', '..')))
-
 from util.sparse_matrix import SparseMatrix
 from util.lsh import LSH
 from statistics import mean

ch06/recommendation/session_based_recommendation_sknn_approach.py

@@ -1,8 +1,6 @@
 import numpy as np
 from neo4j import GraphDatabase
 
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..', '..')))
 from util.sparse_vector import cosine_similarity
 
 

ch06/recommendation/session_based_recommendation_sknn_approach_advanced.py

@@ -1,8 +1,6 @@
 from annoy import AnnoyIndex
 from neo4j import GraphDatabase
 import time
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..', '..')))
 from util.sparse_matrix import SparseMatrix
 from statistics import mean
 import gc

ch07/recommendations/context_aware_recommendation_approach.py

@@ -1,7 +1,5 @@
 from neo4j import GraphDatabase
 
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..', '..')))
 from util.sparse_vector import cosine_similarity
 
 

ch12/04_spacy_ner_schema.py

@@ -2,8 +2,6 @@
 from neo4j import GraphDatabase
 from spacy.lang.en.stop_words import STOP_WORDS
 
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..')))
 from ch12.text_processors import TextProcessor
 from util.query_utils import executeNoException
 

ch12/05_spacy_coref_schema.py

@@ -2,8 +2,6 @@
 from neo4j import GraphDatabase
 import neuralcoref
 
-import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..')))
 from ch12.text_processors import TextProcessor
 from util.query_utils import executeNoException
 

ch12/06_spacy_entity_relationship_extraction.py

@@ -8,7 +8,7 @@
 from spacy.matcher import Matcher, DependencyMatcher
 
 import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..')))
+
 from ch12.text_processors import TextProcessor
 from util.query_utils import executeNoException
 

ch12/07_process_larger_corpus.py

@@ -2,10 +2,8 @@
 from neo4j import GraphDatabase
 import neuralcoref
 import pandas as pd
-
 import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..')))
-from ch12.text_processors import TextProcessor
+
 from util.query_utils import executeNoException
 
 

ch12/08_spacy_textrank_extraction.py

@@ -3,10 +3,8 @@
 import neuralcoref
 import pytextrank
 import pandas as pd
-import sys
-
 import sys,os
-sys.path.append(os.path.abspath(os.path.join(__file__, '..', '..')))
+
 from util.query_utils import executeNoException
 from ch12.text_processors import TextProcessor