diff --git a/sessions/python-02.tex b/sessions/python-02.tex
index 2d82856..9d5dd8f 100644
--- a/sessions/python-02.tex
+++ b/sessions/python-02.tex
@@ -641,9 +641,9 @@ Mais il vaut mieux recopier le code vous-mêmes.
 
 \begin{lstlisting}
 def read_words():
-    stream = open("pendu.txt")
-    contents = stream.read()
-    stream.close()
+    file = open("pendu.txt")
+    contents = file.read()
+    file.close()
     words = splitlines()
     return words
 \end{lstlisting}
diff --git a/sources/05-airports.py b/sources/05-airports.py
index d6bf844..f14b2f3 100644
--- a/sources/05-airports.py
+++ b/sources/05-airports.py
@@ -3,8 +3,8 @@ import sys
 
 def build_airport_dict():
     result = dict()
-    stream = open("airports.txt", "r")
-    contents = stream.read()
+    file = open("airports.txt", "r")
+    contents = file.read()
     lines = contents.splitlines()
     for line in lines:
         words = line.split(" ", maxsplit=1)
diff --git a/sources/06-top-words.py b/sources/06-top-words.py
index 407fa3a..d89f4a2 100644
--- a/sources/06-top-words.py
+++ b/sources/06-top-words.py
@@ -17,11 +17,11 @@ def get_word(chunk):
 
 def main():
     filename = sys.argv[1]
-    stream = open(filename, "r")
+    file = open(filename, "r")
 
     scores = {}
 
-    for line in stream.readlines():
+    for line in file.readlines():
         for chunk in line.split():
             word = get_word(chunk)
             if word:
@@ -30,7 +30,7 @@ def main():
                 else:
                     scores[word] += 1
 
-    stream.close()
+    file.close()
 
 
 main()