setTwo.py

# # S1 D3 Assignment - Set 2

# ### Problem **1: Print the following pattern**

# Write a program to print the following number pattern using a loop.

# ```
# 1
# 1 2
# 1 2 3
# 1 2 3 4
# 1 2 3 4 5
# ```

def print_number_pattern(rows):
    for i in range(1, rows + 1):
        for j in range(1, i + 1):
            print(j, end=" ")
        print()


rows = 5
print_number_pattern(rows)


# ### Problem **2: Display numbers from a list using loop**

# Write a program to display only those numbers from a [list](https://pynative.com/python-lists/) that satisfy the following conditions

# - The number must be divisible by five
# - If the number is greater than 150, then skip it and move to the next number
# - If the number is greater than 500, then stop the loop

# **Given**:

# ```
# numbers = [12, 75, 150, 180, 145, 525, 50]
# ```

# **Expected output:**

# ```
# 75
# 150
# 145
# ```
def display_numbers(numbers):
    for num in numbers:
        if num % 5 == 0 and num <= 500:
            if num > 150:
                continue
            print(num)
        else:
            break


numbers = [12, 75, 150, 180, 145, 525, 50]
display_numbers(numbers)


# ### Problem **3: Append new string in the middle of a given string**

# Given two strings, `s1` and `s2`. Write a program to create a new string `s3` by appending `s2` in the middle of `s1`.

# **Given**:

# ```
# s1 = "Ault"
# s2 = "Kelly"
# ```

# **Expected Output**:

# ```
# AuKellylt
# ```

def append_middle(s1, s2):
    middle_index = len(s1) // 2
    s3 = s1[:middle_index] + s2 + s1[middle_index:]
    return s3


s1 = "Ault"
s2 = "Kelly"
result = append_middle(s1, s2)
print(result)


# ### Problem **4: Arrange string characters such that lowercase letters should come first**

# Given string contains a combination of the lower and upper case letters. Write a program to arrange the characters of a string so that all lowercase letters should come first.

# **Given**:

# ```
# str1 = PyNaTive
# ```

# **Expected Output**:

# ```
# yaivePNT
# ```

def arrange_lowercase_first(input_str):
    return ''.join(sorted(input_str, key=lambda x: (x.isupper(), x)))


str1 = "PyNaTive"
result = arrange_lowercase_first(str1)
print(result)


# ### Problem **5: Concatenate two lists index-wise**

# Write a program to add two lists index-wise. Create a new list that contains the 0th index item from both the list, then the 1st index item, and so on till the last element. any leftover items will get added at the end of the new list.

# **Given**:

# ```
# list1 = ["M", "na", "i", "Ke"]
# list2 = ["y", "me", "s", "lly"]
# ```

# **Expected output:**

# ```
# ['My', 'name', 'is', 'Kelly']
# ```

def concatenate_lists_indexwise(list1, list2):
    return [x + y for x, y in zip(list1, list2)]


list1 = ["M", "na", "i", "Ke"]
list2 = ["y", "me", "s", "lly"]
result = concatenate_lists_indexwise(list1, list2)
print(result)


# ### Problem **6: Concatenate two lists in the following order**

# ```
# list1 = ["Hello ", "take "]
# list2 = ["Dear", "Sir"]
# ```

# **Expected output:**

# ```
# ['Hello Dear', 'Hello Sir', 'take Dear', 'take Sir']
# ```
list1 = ["Hello ", "take "]
list2 = ["Dear", "Sir"]

result = [x + y for x in list1 for y in list2]

print(result)


# ### Problem **7: Iterate both lists simultaneously**

# Given a two Python list. Write a program to iterate both lists simultaneously and display items from list1 in original order and items from list2 in reverse order.

# **Given**

# ```
# list1 = [10, 20, 30, 40]
# list2 = [100, 200, 300, 400]
# ```

# **Expected output:**

# ```
# 10 400
# 20 300
# 30 200
# 40 100
# ```

l = [10, 20, 30, 40]
l2 = [100, 200, 300, 400]

zipl = zip(l, l2[::-1])


for num, num2 in zipl:
    print(num, num2)


# ### Problem **8: Initialize dictionary with default values**

# In Python, we can initialize the keys with the same values.

# **Given**:

# ```
# employees = ['Kelly', 'Emma']
# defaults = {"designation": 'Developer', "salary": 8000}
# ```

# **Expected output:**

# ```
# {'Kelly': {'designation': 'Developer', 'salary': 8000}, 'Emma': {'designation': 'Developer', 'salary': 8000}}
# ```
employees = ['Kelly', 'Emma']
defaults = {"designation": 'Developer', "salary": 8000}
details = {employee: defaults.copy() for employee in employees}

print(details)


# ### Problem **9: Create a dictionary by extracting the keys from a given dictionary**

# Write a Python program to create a new dictionary by extracting the mentioned keys from the below dictionary.

# **Given dictionary**:

# ```
# sample_dict = {
#     "name": "Kelly",
#     "age": 25,
#     "salary": 8000,
#     "city": "New york"}

# # Keys to extract
# keys = ["name", "salary"]
# ```

# **Expected output:**

# ```
# {'name': 'Kelly', 'salary': 8000}
# ```

sample_dict = {
    "name": "Kelly",
    "age": 25,
    "salary": 8000,
    "city": "New york"}

# Keys to extract
keys = ["name", "salary"]

ans = {"name": sample_dict.get("name"),
           "salery" : sample_dict.get("salary")
          }

print(ans)



# ### Problem **10: Modify the tuple**

# Given a nested tuple. Write a program to modify the first item (22) of a list inside the following tuple to 222

# **Given**:

# ```
# tuple1 = (11, [22, 33], 44, 55)
# ```

# **Expected output:**

# tuple1: (11, [222, 33], 44, 55)


tuple1 = (11, [22, 33], 44, 55)

tuple1[1][0]=222

print(tuple1)