Pandas - 通过 csv 重复行

问题描述

强制性警告 - Python 和 Pandas 的新内容。

我有一个 .csv 文件，其中包含我想通过 CanvasAPI 运行以获取用户名的信息。 .csv 布局是：

     Name  user_id
0  Name_1     7454
1  Name_2     7075
2  Name_3     7377
3  Name_4     7259
4  Name_5     7294
5  Name_6     7491

我可以毫无困难地通过 get_user 函数处理单个单元格，如下所示：

from canvasapi import Canvas
import pandas as pd

df = pd.read_csv("Test2.csv")

user = df['user_id'][0]

print(canvas.get_user(user))

输出为：

Name_1 (7454)

然而，我完全不知道如何在 Pandas 中重复行以进行类似的拉动。我的第一次代码尝试是：

users = df['user_id'][0:5]

def user_id():
    for user in users:
        print(user)

print(canvas.get_user(user_id()))

产生以下错误：

7454
7075
7377
7259
7294
Traceback (most recent call last):
  File "C:\Users\danie\AppData\Local\Programs\Python\python39\lib\site-packages\canvasapi\util.py",line 116,in obj_or_id
    return int(parameter)
TypeError: int() argument must be a string,a bytes-like object or a number,not 'nonetype'

During handling of the above exception,another exception occurred:

Traceback (most recent call last):
  File "C:\Users\danie\AppData\Local\Temp\atom_script_tempfiles\2021523-18696-123dxol.cjwo",line 39,in <module>
    print(canvas.get_user(user_id()))
  File "C:\Users\danie\AppData\Local\Programs\Python\python39\lib\site-packages\canvasapi\canvas.py",line 1221,in get_user
    user_id = obj_or_id(user,"user",(User,))
  File "C:\Users\danie\AppData\Local\Programs\Python\python39\lib\site-packages\canvasapi\util.py",line 133,in obj_or_id
    raise TypeError(message)
TypeError: Parameter user must be of type User or int.

试图重申第二种方式：

print(canvas.get_user(df['user_id'][0:5]))

我遇到了这个错误：

Traceback (most recent call last):
  File "C:\Users\danie\AppData\Local\Temp\atom_script_tempfiles\2021523-18696-gmkiri.t4uur",line 49,in <module>
    print(canvas.get_user(df['user_id'][0:5]))
  File "C:\Users\danie\AppData\Local\Programs\Python\python39\lib\site-packages\canvasapi\canvas.py",line 1218,in get_user
    elif user == "self":
  File "C:\Users\danie\AppData\Local\Programs\Python\python39\lib\site-packages\pandas\core\generic.py",line 1442,in __nonzero__
    raise ValueError(
ValueError: The truth value of a Series is ambiguous. Use a.empty,a.bool(),a.item(),a.any() or a.all().

第三次尝试：

def user_id():
    for i,row in df.iterrows():
        print(f"{row[1]}\n")

user_id = pd.to_numeric(user_id())

print(canvas.get_user(user_id))

产生此错误：

7454

7075

7377

7259

7294

7491

Traceback (most recent call last):
  File "C:\Users\danie\AppData\Local\Programs\Python\python39\lib\site-packages\canvasapi\util.py",in obj_or_id
    return int(parameter)
ValueError: cannot convert float NaN to integer

During handling of the above exception,another exception occurred:

Traceback (most recent call last):
  File "C:\Users\danie\AppData\Local\Temp\atom_script_tempfiles\2021523-18696-62ic5r.qihqf",line 41,in <module>
    print(canvas.get_user(user_id))
  File "C:\Users\danie\AppData\Local\Programs\Python\python39\lib\site-packages\canvasapi\canvas.py",in obj_or_id
    raise TypeError(message)
TypeError: Parameter user must be of type User or int.

我对如何进行正式没有想法。关于我做错了什么以及朝着正确方向前进的任何想法？非常感谢所有帮助。

解决方法

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