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app.py

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+import streamlit as st
+import pandas as pd
+from io import BytesIO
+
+# Define the button and title styles
+styles = """
+<style>
+/* Button styles */
+div.stButton > button {
+    color: #ffffff; /* Text color */
+    font-size: 20px;
+    background-image: linear-gradient(0deg, #a2c2e1 0%, #003b5c 100%); /* Light blue to deep blue gradient */
+    border: none;
+    padding: 10px 20px;
+    cursor: pointer;
+    border-radius: 15px;
+    display: inline-block;
+    width: 100%; /* Make button fit column width */
+}
+div.stButton > button:hover {
+    background-color: #00ff00; /* Hover background color */
+    color: #ff0000; /* Hover text color */
+}
+
+/* Title styles */
+h1 {
+    background-image: linear-gradient(0deg, #a2c2e1 0%, #003b5c 100%); /* Light blue to deep blue gradient */
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    font-size: 36px;
+}
+</style>
+"""
+
+# Set up the Streamlit app
+st.markdown(styles, unsafe_allow_html=True)
+
+# Custom gradient title
+st.markdown("<h1>CSV and Excel Appender</h1>", unsafe_allow_html=True)
+st.write("A website that is used for appending multiple CSV and Excel files and converting them to a desired format.")
+
+# File uploader for multiple CSV and Excel files
+uploaded_files = st.file_uploader("Upload CSV or Excel files", type=["csv", "xlsx"], accept_multiple_files=True)
+
+if uploaded_files:
+    # Initialize an empty list to store DataFrames
+    df_list = []
+
+    for i, uploaded_file in enumerate(uploaded_files):
+        # Get the file name without extension
+        file_name = uploaded_file.name
+
+        # Check the file type and read accordingly
+        if uploaded_file.type == "text/csv":
+            if i == 0:
+                # For the first file, include the header
+                df = pd.read_csv(uploaded_file)
+                # Store the columns from the first file
+                headers = df.columns
+            else:
+                # For subsequent files, set the header using the stored headers
+                df = pd.read_csv(uploaded_file, names=headers, header=0)
+        elif uploaded_file.type == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet":
+            if i == 0:
+                # For the first file, include the header
+                df = pd.read_excel(uploaded_file)
+                # Store the columns from the first file
+                headers = df.columns
+            else:
+                # For subsequent files, set the header using the stored headers
+                df = pd.read_excel(uploaded_file, names=headers, header=0)
+
+        # Add a column for the file name
+        df['file_name'] = file_name
+        df_list.append(df)
+
+    # Concatenate all DataFrames, ignoring index to avoid duplication
+    merged_df = pd.concat(df_list, ignore_index=True)
+
+    # Display the merged DataFrame
+    st.markdown("<h1>Appended Data</h1>", unsafe_allow_html=True)
+    st.dataframe(merged_df)
+
+    # Create a layout with 3 columns for buttons
+    col1, col2, col3 = st.columns(3)
+
+    with col1:
+        # Provide a download button for the merged CSV file
+        csv_output = BytesIO()
+        merged_df.to_csv(csv_output, index=False)
+        csv_output.seek(0)
+        st.download_button(
+            label="Download Merged CSV File",
+            data=csv_output,
+            file_name="merged_data.csv",
+            mime="text/csv"
+        )
+
+    with col2:
+        # Provide an option to convert to Excel
+        excel_output = BytesIO()
+        with pd.ExcelWriter(excel_output, engine='xlsxwriter') as writer:
+            merged_df.to_excel(writer, index=False)
+        excel_output.seek(0)
+        st.download_button(
+            label="Download Merged Excel File",
+            data=excel_output,
+            file_name="merged_data.xlsx",
+            mime="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
+        )
+else:
+    st.write("")

requirements.txt

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+absl-py==2.1.0
+aiohttp==3.9.5
+aiohttp-retry==2.8.3
+aiosignal==1.3.1
+altair==4.2.2
+annotated-types==0.7.0
+anyio==4.4.0
+APScheduler==3.10.4
+astunparse==1.6.3
+async-timeout==4.0.3
+attrs==23.2.0
+beautifulsoup4==4.12.3
+blinker==1.8.2
+cachetools==5.3.3
+cairocffi==1.7.1
+CairoSVG==2.7.1
+certifi==2024.6.2
+cffi==1.16.0
+charset-normalizer==3.3.2
+click==8.1.7
+cloudevents==1.11.0
+contourpy==1.2.1
+css==0.1
+cssselect2==0.7.0
+cycler==0.12.1
+db-dtypes==1.2.0
+defusedxml==0.7.1
+deprecation==2.1.0
+distro==1.9.0
+entrypoints==0.4
+et-xmlfile==1.1.0
+exceptiongroup==1.2.1
+filelock==3.15.4
+Flask==3.0.3
+flatbuffers==24.3.25
+fonttools==4.53.1
+fpdf==1.7.2
+frozenlist==1.4.1
+fsspec==2024.6.1
+functions-framework==3.8.0
+gast==0.6.0
+gitdb==4.0.11
+GitPython==3.1.43
+google-api-core==2.19.0
+google-auth==2.30.0
+google-auth-oauthlib==1.2.0
+google-cloud==0.34.0
+google-cloud-bigquery==3.24.0
+google-cloud-core==2.4.1
+google-crc32c==1.5.0
+google-pasta==0.2.0
+google-resumable-media==2.7.1
+googleapis-common-protos==1.63.1
+grpcio==1.64.1
+grpcio-status==1.62.2
+gspread==6.1.2
+gunicorn==22.0.0
+h11==0.14.0
+h5py==3.11.0
+httpcore==1.0.5
+httplib2==0.22.0
+httpx==0.27.0
+huggingface-hub==0.24.1
+idna==3.7
+importlib_metadata==8.0.0
+importlib_resources==6.4.0
+itsdangerous==2.2.0
+Jinja2==3.1.4
+jsonschema==4.22.0
+jsonschema-specifications==2023.12.1
+keras==3.4.1
+kiwisolver==1.4.5
+libclang==18.1.1
+lxml==5.2.2
+Markdown==3.6
+markdown-it-py==3.0.0
+MarkupSafe==2.1.5
+matplotlib==3.9.1
+mdurl==0.1.2
+ml-dtypes==0.4.0
+mpmath==1.3.0
+multidict==6.0.5
+namex==0.0.8
+networkx==3.2.1
+ngrok==1.3.0
+numpy==1.26.4
+oauth2client==4.1.3
+oauthlib==3.2.2
+openai==1.37.1
+openpyxl==3.1.4
+opt-einsum==3.3.0
+optree==0.12.1
+outcome==1.3.0.post0
+packaging==24.1
+pandas==2.2.2
+pillow==10.3.0
+proto-plus==1.24.0
+protobuf==4.25.3
+pyarrow==16.1.0
+pyasn1==0.6.0
+pyasn1_modules==0.4.0
+pycparser==2.22
+pydantic==2.8.2
+pydantic_core==2.20.1
+pydeck==0.9.1
+Pygments==2.18.0
+PyJWT==2.8.0
+pyngrok==7.2.0
+pyparsing==3.1.2
+PyPDF2==3.0.1
+PySocks==1.7.1
+pytesseract==0.3.10
+python-dateutil==2.9.0.post0
+python-decouple==3.8
+python-docx==1.1.2
+python-dotenv==1.0.1
+pytz==2024.1
+PyYAML==6.0.1
+referencing==0.35.1
+regex==2024.5.15
+requests==2.32.3
+requests-oauthlib==2.0.0
+rich==13.7.1
+rpds-py==0.18.1
+rsa==4.9
+safetensors==0.4.3
+schedule==1.2.2
+selenium==4.22.0
+six==1.16.0
+smmap==5.0.1
+sniffio==1.3.1
+sortedcontainers==2.4.0
+soupsieve==2.5
+streamlit==1.37.0
+streamlit-aggrid==1.0.5
+streamlit-option-menu==0.3.13
+streamlit-space==0.1.5
+streamlit-toggle==0.1.3
+streamlit-toggle-switch==1.0.2
+sympy==1.13.1
+tenacity==8.3.0
+tensorboard==2.17.0
+tensorboard-data-server==0.7.2
+tensorflow==2.17.0
+tensorflow-io-gcs-filesystem==0.37.1
+termcolor==2.4.0
+tf_keras==2.17.0
+tinycss2==1.3.0
+tokenizers==0.19.1
+toml==0.10.2
+toolz==0.12.1
+torch==2.4.0
+tornado==6.4.1
+tqdm==4.66.4
+transformers==4.43.3
+trio==0.25.1
+trio-websocket==0.11.1
+twilio==9.2.3
+typing_extensions==4.12.2
+tzdata==2024.1
+tzlocal==5.2
+urllib3==2.2.2
+watchdog==4.0.1
+webencodings==0.5.1
+websocket-client==1.8.0
+Werkzeug==3.0.3
+wrapt==1.16.0
+wsproto==1.2.0
+XlsxWriter==3.2.0
+yarl==1.9.4
+zipp==3.19.2