From 30c35eefe6cee55b8eb9868164c7a683599e88c0 Mon Sep 17 00:00:00 2001
From: swetha-create-tech <developerswetha65@gmail.com>
Date: Sun, 26 Oct 2025 12:40:54 +0530
Subject: [PATCH 1/2] Add files via upload

---
 typeconversion.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 typeconversion.py

diff --git a/typeconversion.py b/typeconversion.py
new file mode 100644
index 00000000..2c6a96a3
--- /dev/null
+++ b/typeconversion.py
@@ -0,0 +1,18 @@
+# Sno 3 : "Type Conversion and validation examples: Implement a Python program to type conversion and validation examples"
+
+#conversion of tuple to list
+tuple=(1,2,3,4,5)
+list1=list(tuple)
+print("conversion of tuple to list",list1)
+#conversion of int to float
+a=22
+print("conversion of int to float",float(a))
+#conversion of float to int
+b=33.0
+print("conversion of float to int",int(b))
+#int to string conversion
+c=7888
+print("int to string conversion",str(c))
+#string len to float
+s="swe"
+print("string to float",float(len(s)))
\ No newline at end of file

From ca729b30026207aedbdcc64355b20b2bf76f07f8 Mon Sep 17 00:00:00 2001
From: swetha-create-tech <developerswetha65@gmail.com>
Date: Fri, 31 Oct 2025 10:42:55 +0530
Subject: [PATCH 2/2] Add files via upload

---
 merge_csv_file.py | 78 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 merge_csv_file.py

diff --git a/merge_csv_file.py b/merge_csv_file.py
new file mode 100644
index 00000000..dc08e088
--- /dev/null
+++ b/merge_csv_file.py
@@ -0,0 +1,78 @@
+# File: merge_csv_by_key.py
+# Task: Merge multiple CSV files by a common key (e.g., "id")
+# Author: VGLUG - Linus Torvalds - 2025
+
+import pandas as pd
+import glob
+import os
+
+def merge_csv_files_by_key(folder_path, key_column, output_file):
+    # Find all CSV files in the given folder
+    csv_files = glob.glob(os.path.join(folder_path, "*.csv"))
+    
+    if not csv_files:
+        print("❌ No CSV files found in the folder!")
+        return
+
+    print(f"📂 Found {len(csv_files)} CSV files. Merging by key '{key_column}'...")
+
+    # Read the first CSV as base
+    merged_df = pd.read_csv(csv_files[0])
+    print(f"✅ Loaded: {os.path.basename(csv_files[0])}")
+
+    # Merge all remaining CSV files one by one
+    for file in csv_files[1:]:
+        df = pd.read_csv(file)
+        print(f"🔄 Merging: {os.path.basename(file)}")
+        merged_df = pd.merge(merged_df, df, on=key_column, how="outer")  # or "inner"
+
+    # Save the merged file
+    merged_df.to_csv(output_file, index=False)
+    print(f"\n✅ Successfully merged files saved as: {output_file}")
+
+# ------------------ RUN SECTION ------------------
+if __name__ == "__main__":
+    folder = input("Enter the folder path containing CSV files: ").strip()
+    key = input("Enter the key column name to merge on (e.g., id): ").strip()
+    output = input("Enter output CSV file name (e.g., merged_output.csv): ").strip()
+
+    merge_csv_files_by_key(folder, key, output)
+# File: merge_csv_by_key.py
+# Task: Merge multiple CSV files by a common key (e.g., "id")
+# Author: VGLUG - Linus Torvalds - 2025
+
+import pandas as pd
+import glob
+import os
+
+def merge_csv_files_by_key(folder_path, key_column, output_file):
+    # Find all CSV files in the given folder
+    csv_files = glob.glob(os.path.join(folder_path, "*.csv"))
+    
+    if not csv_files:
+        print("❌ No CSV files found in the folder!")
+        return
+
+    print(f"📂 Found {len(csv_files)} CSV files. Merging by key '{key_column}'...")
+
+    # Read the first CSV as base
+    merged_df = pd.read_csv(csv_files[0])
+    print(f"✅ Loaded: {os.path.basename(csv_files[0])}")
+
+    # Merge all remaining CSV files one by one
+    for file in csv_files[1:]:
+        df = pd.read_csv(file)
+        print(f"🔄 Merging: {os.path.basename(file)}")
+        merged_df = pd.merge(merged_df, df, on=key_column, how="outer")  # or "inner"
+
+    # Save the merged file
+    merged_df.to_csv(output_file, index=False)
+    print(f"\n✅ Successfully merged files saved as: {output_file}")
+
+# ------------------ RUN SECTION ------------------
+if __name__ == "__main__":
+    folder = input("Enter the folder path containing CSV files: ").strip()
+    key = input("Enter the key column name to merge on (e.g., id): ").strip()
+    output = input("Enter output CSV file name (e.g., merged_output.csv): ").strip()
+
+    merge_csv_files_by_key(folder, key, output)