From cb3613319a7ddb1288ea73156ba253f8cfd359d8 Mon Sep 17 00:00:00 2001
From: DarkCoder <zuhayr2003@gmail.com>
Date: Sat, 5 Oct 2019 16:47:09 +0600
Subject: [PATCH 1/4] Added a python script for finding sum of arithmetic
 series

---
 maths/sum_of_arithmetic_series.py | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 maths/sum_of_arithmetic_series.py

diff --git a/maths/sum_of_arithmetic_series.py b/maths/sum_of_arithmetic_series.py
new file mode 100644
index 000000000000..1c4bed8d8bb4
--- /dev/null
+++ b/maths/sum_of_arithmetic_series.py
@@ -0,0 +1,9 @@
+def sumOfSeries(a, d, n):
+    sum = (n / 2) * (2 * a (n - 1) * d)
+    return sum
+
+given_a = int(input("Enter the first value of the series: "))
+given_d = int(input("Enter the difference of each term: "))
+given_n = int(input("Enter the number of terms: "))
+
+print(sumOfSeries(given_a, given_d, given_n))
\ No newline at end of file

From 9ed2fa3c77d82e2b865f9c0ab81f2c459c67cd52 Mon Sep 17 00:00:00 2001
From: DarkCoder <zuhayr2003@gmail.com>
Date: Sat, 5 Oct 2019 18:22:47 +0600
Subject: [PATCH 2/4] Added some linting

---
 maths/sum_of_arithmetic_series.py | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)
 mode change 100644 => 100755 maths/sum_of_arithmetic_series.py

diff --git a/maths/sum_of_arithmetic_series.py b/maths/sum_of_arithmetic_series.py
old mode 100644
new mode 100755
index 1c4bed8d8bb4..6253d136a36d
--- a/maths/sum_of_arithmetic_series.py
+++ b/maths/sum_of_arithmetic_series.py
@@ -1,9 +1,12 @@
+# DarkCoder
 def sumOfSeries(a, d, n):
-    sum = (n / 2) * (2 * a (n - 1) * d)
-    return sum
+    sum = ((n / 2) * (2 * a * (n - 1) * d))  # formula for sum of series
+    print(sum)
 
-given_a = int(input("Enter the first value of the series: "))
-given_d = int(input("Enter the difference of each term: "))
-given_n = int(input("Enter the number of terms: "))
 
-print(sumOfSeries(given_a, given_d, given_n))
\ No newline at end of file
+def main():
+    sumOfSeries(3, 4, 100)
+
+
+if __name__ == "__main__":
+    main()

From b5b3126dfa839f6c08a8ad62bbecb58fc28d3627 Mon Sep 17 00:00:00 2001
From: DarkCoder <zuhayr2003@gmail.com>
Date: Sat, 5 Oct 2019 20:25:07 +0600
Subject: [PATCH 3/4] Resolved comments

---
 maths/sum_of_arithmetic_series.py | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/maths/sum_of_arithmetic_series.py b/maths/sum_of_arithmetic_series.py
index 6253d136a36d..45d45a5f28df 100755
--- a/maths/sum_of_arithmetic_series.py
+++ b/maths/sum_of_arithmetic_series.py
@@ -1,12 +1,21 @@
 # DarkCoder
-def sumOfSeries(a, d, n):
-    sum = ((n / 2) * (2 * a * (n - 1) * d))  # formula for sum of series
-    print(sum)
+def sum_of_series(first_term, common_difference, number_of_terms):
+    """
+    Find the sum of n terms in an arithmetic progression.
+
+    >>> sum_of_series(1, 1, 10)
+    55.0
+    >>> sum_of_series(1, 10, 100)
+    49600.0
+    """
+    sum = ((number_of_terms / 2) * (2 * first_term + (number_of_terms - 1) * common_difference))  # formula for sum of series
+    return sum
 
 
 def main():
-    sumOfSeries(3, 4, 100)
+    print(sum_of_series(1, 1, 10))
 
 
 if __name__ == "__main__":
-    main()
+    import doctest
+    doctest.testmod()

From 6936c49547efa47402c9be3527c88c7e65a9ed41 Mon Sep 17 00:00:00 2001
From: DarkCoder <zuhayr2003@gmail.com>
Date: Sun, 6 Oct 2019 02:27:26 +0600
Subject: [PATCH 4/4] Fixed flake8 test

---
 maths/sum_of_arithmetic_series.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/maths/sum_of_arithmetic_series.py b/maths/sum_of_arithmetic_series.py
index 45d45a5f28df..f7ea5dc84cb8 100755
--- a/maths/sum_of_arithmetic_series.py
+++ b/maths/sum_of_arithmetic_series.py
@@ -1,5 +1,5 @@
 # DarkCoder
-def sum_of_series(first_term, common_difference, number_of_terms):
+def sum_of_series(first_term, common_diff, num_of_terms):
     """
     Find the sum of n terms in an arithmetic progression.
 
@@ -8,7 +8,8 @@ def sum_of_series(first_term, common_difference, number_of_terms):
     >>> sum_of_series(1, 10, 100)
     49600.0
     """
-    sum = ((number_of_terms / 2) * (2 * first_term + (number_of_terms - 1) * common_difference))  # formula for sum of series
+    sum = ((num_of_terms/2)*(2*first_term+(num_of_terms-1)*common_diff))
+    # formula for sum of series
     return sum