我找到了pandas的isin函数，但看起来所有大写字母都没有显示？
import pandas as pd
df = pd.read_json('{"Technology Group":{"0":"Cloud","1":"Cloud","2":"Cloud","3":"Collaboration","4":"Collaboration","5":"Collaboration","6":"Collaboration","7":"Collaboration","8":"Collaboration","9":"Core", "10": "Software"},"Technology":{"0":"AMP","1":"EWS","2":"Webex","3":"Telepresence","4":"Call Manager","5":"Contact Center","6":"MS Voice","7":"Apps","8":"PRIME ","9":"Wirelees", "10": "Prime Infrastructure"}}')
+------------------+----------------------+
| Technology Group | Technology |
+------------------+----------------------+
| Cloud | AMP |
+------------------+----------------------+
| Cloud | EWS |
+------------------+----------------------+
| Cloud | Webex |
+------------------+----------------------+
| Collaboration | Telepresence |
+------------------+----------------------+
| Collaboration | Call Manager |
+------------------+----------------------+
| Collaboration | Contact Center |
+------------------+----------------------+
| Collaboration | MS Voice |
+------------------+----------------------+
| Collaboration | Apps |
+------------------+----------------------+
| Collaboration | PRIME |
+------------------+----------------------+
| Core | Wirelees |
+------------------+----------------------+
| Software | Prime Infrastructure |
+------------------+----------------------+
tech_input2 = ['AMP', 'Call Manager', 'PRIME']
df = df[df['Technology'].isin(tech_input2)]
它将显示下表：
+------------------+--------------+
| Technology Group | Technology |
+------------------+--------------+
| Cloud | AMP |
+------------------+--------------+
| Collaboration | Call Manager |
+------------------+--------------+
这是一个错误吗？还是我做错了什么？从技术上讲，它不是表格中原始最后一行的副本，但不确定如何破译它。它似乎更像是包含而不是isin ...
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