Python:Pandas在Pandas（数据框）中查找文本的可用性

我在熊猫数据框中有两列ColA ColB， 我想比较ColB和ColA如果ColA包含与ColB匹配的单词，那么我必须更新colC

If it not macthes print not available.
ColA                                                            ColB  
You can extract_insights on product reception                   insights
user various sources like extract_insights etc.                 insights   
some other sourced mail by using signals from state art         text       

注意：即使列A包含任何特殊字符，它也应该能够识别colB文本

期望输出：

If it not macthes print not available.
ColA                                                           ColB     Colc
You can extract_insights on product reception                  insights AVB
user various sources like extract_insights etc.                insights AVB  
some other sourced mail by using signals from state art        text     NAVB  

请尝试以下操作：

import pandas as pd

# Initialize example dataframe
data = [
    ["You can extract_insights on product reception", "insights"],
    ["user various sources like extract_insights etc.", "insights"],
    ["some other sourced mail by using signals from state art", "text"],
]
df = pd.DataFrame(data=data, columns=["ColA", "ColB"])

# Create column C with comparison results
df["ColC"] = [
    "AVB" if (b in a) else "NAVB"
    for (a, b) in zip(df["ColA"], df["ColB"])
]

print(df)
# Output:
#                                                 ColA      ColB  ColC
# 0      You can extract_insights on product reception  insights   AVB
# 1    user various sources like extract_insights etc.  insights   AVB
# 2  some other sourced mail by using signals from ...      text  NAVB

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你能说清楚点吗？