feat: add python solution to lc problem: No.0476 (doocs#1882)

* Solution for 185.

* style: format code and docs with prettier

* Solution for 196.

* Update README_EN.md

* Update README.md

* Solution for 197.

* Solution for 262.

* style: format code and docs with prettier

* Solution for 319.

* Solution for 332.

* Solution for 468.

* Solution for 476.

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Co-authored-by: nrhitik <nrhitik@users.noreply.github.com>

Author: nrhitik

solution/0400-0499/0476.Number Complement/README.md

@@ -72,6 +72,13 @@ class Solution:
         return ans
 ```
 
+```python
+class Solution:
+    def findComplement(self, num: int) -> int:
+        return num ^ (2 ** (len(bin(num)[2:])) - 1)
+
+```
+
 ### **Java**
 
 <!-- 这里可写当前语言的特殊实现逻辑 -->

solution/0400-0499/0476.Number Complement/README_EN.md

@@ -60,6 +60,13 @@ class Solution:
         return ans
 ```
 
+```python
+class Solution:
+    def findComplement(self, num: int) -> int:
+        return num ^ (2 ** (len(bin(num)[2:])) - 1)
+
+```
+
 ### **Java**
 
 ```java

solution/0400-0499/0476.Number Complement/Solution.py

@@ -0,0 +1,3 @@
+class Solution:
+    def findComplement(self, num: int) -> int:
+        return num ^ (2 ** (len(bin(num)[2:])) - 1)