solutions of day 2

day2/solutions/task2/readme.md

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+# Python: Understanding *args and **kwargs
+
+This mini project explains how to use `*args` and `**kwargs` in Python functions. These features help you write flexible, reusable, and dynamic functions that can handle varying numbers of inputs.
+
+---
+
+## 📌 What is `*args`?
+
+- `*args` allows a function to accept any number of **positional arguments**.
+- These arguments are stored as a **tuple** inside the function.
+- Useful when you’re not sure how many values will be passed.
+
+### ✅ Example of `*args`
+
+```python
+def add_numbers(*args):
+    total = sum(args)
+    print("Sum:", total)
+
+add_numbers(10, 20, 30)
+```
+
+---
+
+## 📌 What is `**kwargs`?
+
+- `**kwargs` allows a function to accept any number of **keyword arguments**.
+- These arguments are stored as a **dictionary** inside the function.
+- Useful for handling optional or dynamic key-value inputs.
+
+### ✅ Example of `**kwargs`
+
+```python
+def print_user_info(**kwargs):
+    for key, value in kwargs.items():
+        print(f"{key}: {value}")
+
+print_user_info(name="Alice", age=25, city="London")
+```

day2/solutions/task2/solution.py

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+# Task=2
+
+def student_result(**kwargs):
+    print(kwargs) # Inside the function, kwargs is a dictionary
+    failed_marks=37
+    total=0
+    max_marks=0
+    max_user=''
+    failed_user=[]
+    for name in kwargs:
+        total=total+kwargs[name]
+
+        #for max user
+        if kwargs[name]>max_marks:
+            max_marks=kwargs[name]
+            max_user=name
+
+        #for failed user    
+        if kwargs[name]<failed_marks:
+            failed_user.append(name)
+
+    #print(total)
+    average_marks=total/len(kwargs)
+    print('Average Marks is:-',average_marks)
+    print(f'{max_user}:{max_marks}')
+    print(failed_user)
+
+
+student_result(gaurav=72,sundeep=56,raj=27,shivam=29)

day2/solutions/task3/readme.md

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+# 🧾 User Info Printer
+
+This Python script traverses a nested dictionary structure and prints all user-related information, including each user's details and a list of their friends.
+
+---
+
+## 🧠 Logic Breakdown
+
+1. Loop through each user in the list `a_dict`.
+2. For each user (which is a dictionary), iterate through all key-value pairs using `.items()`.
+3. If the value is a list (like the `"frieds"` key), pass it to the `fried_func()` to handle nested friend data.
+4. Otherwise, print the key-value pair directly.
+5. The `fried_func()` is a helper function that:
+    - Loops through each friend dictionary.
+    - Prints each friend’s information with a tab for better formatting.
+
+---
+
+## 🧰 Function & Method Explanations
+
+### 🔁 `dict.items()`
+
+- In Python, the .items() method is a built-in dictionary method that returns a view object. This view object contains all the key-value pairs of the dictionary as tuples, where each tuple is in the format (key, value).
+
+#### Example:
+```python
+{"name": "gara"}.items()  # ➝ [('name', 'gara')]
+```
+### 🧪 `isinstance()`
+
+-  isinstance(object, type) is used to check the type of a value at runtime.

day2/solutions/task3/solution.py

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+# Task-3
+
+
+def  fried_func(fried):
+    for i in fried:
+        for k,v in i.items():           
+            print(f'\t{k}:-{v}')
+
+for i in a_dict:
+    #print(i)
+    #print (i.items())
+    for key,value in i.items():
+        if isinstance(value,list):
+            print(f'{key}:- ')
+            fried_func(value)
+        else:
+            print(f'{key} :- {value}')