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Create app.py
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app.py
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import gradio as gr
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import pandas as pd
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from pytrends.request import TrendReq
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import plotly.express as px
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import plotly.graph_objects as go
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DEVELOPER_NAME = "黃千宥、陳奕瑄、汪于捷、李哲弘、洪寓澤"
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# 初始化 pytrends
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# hl='zh-TW' -> 繁體中文, tz=480 -> 台灣時區 (GMT+8)
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pytrends = TrendReq(hl='zh-TW', tz=480)
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PLOTLY_TEMPLATE = "plotly_dark"
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def analyze_google_trends(keywords_str: str, timeframe: str):
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"""
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根據輸入的關鍵字和時間範圍,從 Google Trends 獲取並分析資料。
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Args:
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keywords_str: 以逗號分隔的關鍵字字串。
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timeframe: Gradio 選項對應的時間範圍字串。
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Returns:
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一個包含兩個 Plotly 圖表的元組 (時間趨勢圖, 區域熱度圖)。
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"""
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if not keywords_str:
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gr.Warning("請至少輸入一個關鍵字!")
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# 回傳空的圖表
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return go.Figure(), go.Figure()
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# 解析關鍵字
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kw_list = [kw.strip() for kw in keywords_str.split(',')]
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if len(kw_list) > 5:
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gr.Warning("為了圖表清晰,最多支援比較 5 個關鍵字。")
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kw_list = kw_list[:5]
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# 對應 Gradio 選項到 pytrends 的時間格式
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timeframe_map = {
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"過去 7 天": 'now 7-d',
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"過去一個月": 'today 1-m',
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"過去三個月": 'today 3-m',
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"過去一年": 'today 12-m',
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}
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selected_timeframe = timeframe_map.get(timeframe, 'now 7-d')
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try:
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# 1. 獲取時間序列資料
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pytrends.build_payload(kw_list, cat=0, timeframe=selected_timeframe, geo='', gprop='')
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interest_over_time_df = pytrends.interest_over_time()
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if interest_over_time_df.empty:
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gr.Warning(f"找不到關於 '{keywords_str}' 的時間趨勢資料。")
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time_fig = go.Figure()
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else:
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interest_over_time_df = interest_over_time_df.drop(columns=['isPartial'], errors='ignore')
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time_fig = plot_interest_over_time(interest_over_time_df, f"'{', '.join(kw_list)}' 在過去 {timeframe} 的搜尋熱度趨勢")
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# 2. 獲取區域熱度資料
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# 注意:區域熱度分析不支援多個關鍵字同時比較,因此我們只分析第一個關鍵字
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first_keyword = kw_list[0]
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pytrends.build_payload([first_keyword], cat=0, timeframe=selected_timeframe, geo='', gprop='')
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interest_by_region_df = pytrends.interest_by_region(resolution='COUNTRY', inc_low_vol=True, inc_geo_code=False)
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if interest_by_region_df.empty:
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gr.Warning(f"找不到關於 '{first_keyword}' 的區域熱度資料。")
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region_fig = go.Figure()
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else:
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# 只取前 20 名
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interest_by_region_df = interest_by_region_df.sort_values(by=first_keyword, ascending=False).head(20)
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region_fig = plot_interest_by_region(interest_by_region_df, f"'{first_keyword}' 在全球的區域熱度 Top 20")
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return time_fig, region_fig
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except Exception as e:
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gr.Error(f"查詢時發生錯誤: {e}")
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return go.Figure(), go.Figure()
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def plot_interest_over_time(df: pd.DataFrame, title: str):
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"""使用 Plotly 繪製時間趨勢圖。"""
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fig = px.line(df, x=df.index, y=df.columns, title=title, labels={'value': '相對熱度', 'date': '日期', 'variable': '關鍵字'})
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fig.update_layout(
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template=PLOTLY_TEMPLATE,
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paper_bgcolor='rgba(0,0,0,0)',
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plot_bgcolor='rgba(0,0,0,0.2)',
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legend_title_text=''
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)
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return fig
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def plot_interest_by_region(df: pd.DataFrame, title: str):
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"""使用 Plotly 繪製區域熱度長條圖。"""
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fig = px.bar(df, x=df.index, y=df.columns[0], title=title, labels={'y': '相對熱度', 'index': '國家/地區'})
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fig.update_layout(
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template=PLOTLY_TEMPLATE,
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paper_bgcolor='rgba(0,0,0,0)',
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plot_bgcolor='rgba(0,0,0,0.2)'
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)
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fig.update_xaxes(categoryorder='total descending')
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return fig
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with gr.Blocks(
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theme=gr.themes.Soft(
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primary_hue="blue",
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secondary_hue="cyan",
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font=["Arial", "sans-serif"]
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)
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) as app:
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gr.Markdown(f"""
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<div style='text-align: center; padding: 20px; color: white;'>
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<h1 style='font-size: 3em; color: #2563eb;'>📊 Google Trends 趨勢分析儀表板</h1>
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<p style='font-size: 1.2em; color: #A9A9A9;'>輸入關鍵字,洞察全球搜尋趨勢與市場脈動</p>
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<p style='font-size: 0.9em; color: #888;'>Designed by: {DEVELOPER_NAME}</p>
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</div>
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""")
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with gr.Group():
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with gr.Row():
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keywords_input = gr.Textbox(
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label="🔍 輸入關鍵字",
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placeholder="例如:Bitcoin, Ethereum, Dogecoin (以逗號分隔)",
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scale=3
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)
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timeframe_input = gr.Radio(
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["過去 7 天", "過去一個月", "過去三個月", "過去一年"],
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label="🗓️ 選擇時間範圍",
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value="過去 7 天",
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scale=2
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)
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analyze_button = gr.Button("🚀 開始分析", variant="primary")
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with gr.Tabs():
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with gr.TabItem("📈 時間趨勢比較"):
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time_series_plot = gr.Plot()
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with gr.TabItem("🌍 全球區域熱度"):
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region_plot = gr.Plot()
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gr.Markdown("<p style='text-align: center; color: #888;'>註:區域熱度分析僅針對您輸入的第一個關鍵字。</p>")
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analyze_button.click(
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fn=analyze_google_trends,
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inputs=[keywords_input, timeframe_input],
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outputs=[time_series_plot, region_plot]
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)
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gr.Examples(
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examples=[
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["Bitcoin, Ethereum", "過去三個月"],
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["穩定幣, Coinbase", "過去一年"],
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["NVIDIA, AMD, TSMC", "過去一個月"],
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],
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inputs=[keywords_input, timeframe_input]
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)
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app.launch(share=True, debug=False, show_error=True, show_api=False)
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