Fixed LGTM and typehint (TheAlgorithms#3970)

* fixed LGTM
fixed typehint

* updating DIRECTORY.md

* Update lucas_series.py

* Update lucas_series.py

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: John Law <[email protected]>

Author: 3 people

Diff for: DIRECTORY.md

@@ -26,6 +26,8 @@
 
 ## Bit Manipulation
   * [Binary And Operator](https://github.com/TheAlgorithms/Python/blob/master/bit_manipulation/binary_and_operator.py)
+  * [Binary Count Setbits](https://github.com/TheAlgorithms/Python/blob/master/bit_manipulation/binary_count_setbits.py)
+  * [Binary Count Trailing Zeros](https://github.com/TheAlgorithms/Python/blob/master/bit_manipulation/binary_count_trailing_zeros.py)
   * [Binary Or Operator](https://github.com/TheAlgorithms/Python/blob/master/bit_manipulation/binary_or_operator.py)
   * [Binary Xor Operator](https://github.com/TheAlgorithms/Python/blob/master/bit_manipulation/binary_xor_operator.py)
   * [Single Bit Manipulation Operations](https://github.com/TheAlgorithms/Python/blob/master/bit_manipulation/single_bit_manipulation_operations.py)
@@ -47,7 +49,7 @@
   * [Atbash](https://github.com/TheAlgorithms/Python/blob/master/ciphers/atbash.py)
   * [Base16](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base16.py)
   * [Base32](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base32.py)
-  * [Base64 Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base64_cipher.py)
+  * [Base64 Encoding](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base64_encoding.py)
   * [Base85](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base85.py)
   * [Beaufort Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/beaufort_cipher.py)
   * [Brute Force Caesar Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/brute_force_caesar_cipher.py)
@@ -101,6 +103,7 @@
   * [Decimal To Octal](https://github.com/TheAlgorithms/Python/blob/master/conversions/decimal_to_octal.py)
   * [Hexadecimal To Decimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/hexadecimal_to_decimal.py)
   * [Molecular Chemistry](https://github.com/TheAlgorithms/Python/blob/master/conversions/molecular_chemistry.py)
+  * [Octal To Decimal](https://github.com/TheAlgorithms/Python/blob/master/conversions/octal_to_decimal.py)
   * [Prefix Conversions](https://github.com/TheAlgorithms/Python/blob/master/conversions/prefix_conversions.py)
   * [Roman To Integer](https://github.com/TheAlgorithms/Python/blob/master/conversions/roman_to_integer.py)
   * [Temperature Conversions](https://github.com/TheAlgorithms/Python/blob/master/conversions/temperature_conversions.py)
@@ -207,6 +210,7 @@
   * [Heaps Algorithm Iterative](https://github.com/TheAlgorithms/Python/blob/master/divide_and_conquer/heaps_algorithm_iterative.py)
   * [Inversions](https://github.com/TheAlgorithms/Python/blob/master/divide_and_conquer/inversions.py)
   * [Kth Order Statistic](https://github.com/TheAlgorithms/Python/blob/master/divide_and_conquer/kth_order_statistic.py)
+  * [Max Difference Pair](https://github.com/TheAlgorithms/Python/blob/master/divide_and_conquer/max_difference_pair.py)
   * [Max Subarray Sum](https://github.com/TheAlgorithms/Python/blob/master/divide_and_conquer/max_subarray_sum.py)
   * [Mergesort](https://github.com/TheAlgorithms/Python/blob/master/divide_and_conquer/mergesort.py)
   * [Peak](https://github.com/TheAlgorithms/Python/blob/master/divide_and_conquer/peak.py)
@@ -243,6 +247,9 @@
   * [Subset Generation](https://github.com/TheAlgorithms/Python/blob/master/dynamic_programming/subset_generation.py)
   * [Sum Of Subset](https://github.com/TheAlgorithms/Python/blob/master/dynamic_programming/sum_of_subset.py)
 
+## Electronics
+  * [Ohms Law](https://github.com/TheAlgorithms/Python/blob/master/electronics/ohms_law.py)
+
 ## File Transfer
   * [Receive File](https://github.com/TheAlgorithms/Python/blob/master/file_transfer/receive_file.py)
   * [Send File](https://github.com/TheAlgorithms/Python/blob/master/file_transfer/send_file.py)
@@ -804,6 +811,7 @@
   * [Gnome Sort](https://github.com/TheAlgorithms/Python/blob/master/sorts/gnome_sort.py)
   * [Heap Sort](https://github.com/TheAlgorithms/Python/blob/master/sorts/heap_sort.py)
   * [Insertion Sort](https://github.com/TheAlgorithms/Python/blob/master/sorts/insertion_sort.py)
+  * [Intro Sort](https://github.com/TheAlgorithms/Python/blob/master/sorts/intro_sort.py)
   * [Iterative Merge Sort](https://github.com/TheAlgorithms/Python/blob/master/sorts/iterative_merge_sort.py)
   * [Merge Insertion Sort](https://github.com/TheAlgorithms/Python/blob/master/sorts/merge_insertion_sort.py)
   * [Merge Sort](https://github.com/TheAlgorithms/Python/blob/master/sorts/merge_sort.py)
@@ -877,6 +885,8 @@
   * [Get Imdb Top 250 Movies Csv](https://github.com/TheAlgorithms/Python/blob/master/web_programming/get_imdb_top_250_movies_csv.py)
   * [Get Imdbtop](https://github.com/TheAlgorithms/Python/blob/master/web_programming/get_imdbtop.py)
   * [Instagram Crawler](https://github.com/TheAlgorithms/Python/blob/master/web_programming/instagram_crawler.py)
+  * [Instagram Pic](https://github.com/TheAlgorithms/Python/blob/master/web_programming/instagram_pic.py)
   * [Recaptcha Verification](https://github.com/TheAlgorithms/Python/blob/master/web_programming/recaptcha_verification.py)
   * [Slack Message](https://github.com/TheAlgorithms/Python/blob/master/web_programming/slack_message.py)
+  * [Test Fetch Github Info](https://github.com/TheAlgorithms/Python/blob/master/web_programming/test_fetch_github_info.py)
   * [World Covid19 Stats](https://github.com/TheAlgorithms/Python/blob/master/web_programming/world_covid19_stats.py)

Diff for: maths/lucas_series.py

@@ -3,7 +3,7 @@
 """
 
 
-def recursive_lucas_number(n):
+def recursive_lucas_number(n_th_number: int) -> int:
     """
     Returns the nth lucas number
     >>> recursive_lucas_number(1)
@@ -19,17 +19,19 @@ def recursive_lucas_number(n):
         ...
     TypeError: recursive_lucas_number accepts only integer arguments.
     """
-    if n == 1:
-        return n
-    if n == 0:
-        return 2
-    if not isinstance(n, int):
+    if not isinstance(n_th_number, int):
         raise TypeError("recursive_lucas_number accepts only integer arguments.")
+    if n_th_number == 0:
+        return 2
+    if n_th_number == 1:
+        return 1
 
-    return recursive_lucas_number(n - 1) + recursive_lucas_number(n - 2)
+    return recursive_lucas_number(n_th_number - 1) + recursive_lucas_number(
+        n_th_number - 2
+    )
 
 
-def dynamic_lucas_number(n: int) -> int:
+def dynamic_lucas_number(n_th_number: int) -> int:
     """
     Returns the nth lucas number
     >>> dynamic_lucas_number(1)
@@ -45,14 +47,10 @@ def dynamic_lucas_number(n: int) -> int:
         ...
     TypeError: dynamic_lucas_number accepts only integer arguments.
     """
-    if not isinstance(n, int):
+    if not isinstance(n_th_number, int):
         raise TypeError("dynamic_lucas_number accepts only integer arguments.")
-    if n == 0:
-        return 2
-    if n == 1:
-        return 1
     a, b = 2, 1
-    for i in range(n):
+    for i in range(n_th_number):
         a, b = b, a + b
     return a
 
@@ -62,7 +60,6 @@ def dynamic_lucas_number(n: int) -> int:
 
     testmod()
     n = int(input("Enter the number of terms in lucas series:\n").strip())
-    n = int(input("Enter the number of terms in lucas series:\n").strip())
     print("Using recursive function to calculate lucas series:")
     print(" ".join(str(recursive_lucas_number(i)) for i in range(n)))
     print("\nUsing dynamic function to calculate lucas series:")