TypeError: coercing to Unicode: need string or buffer, type found when running python file

Question

我有一个 python 脚本，它从 .csv 文件中读取数据并使用它对数据进行数学计算。当我运行它时，我得到这个错误：

Traceback (most recent call last):
  File "HW1_PythonTemplate.py", line 120, in <module>
    print ','.join(map(str,calculate(args.data, args.i)))
  File "HW1_PythonTemplate.py", line 56, in calculate
    with open(file, 'r') as csvfile:
TypeError: coercing to Unicode: need string or buffer, type found

我的代码如下：

import argparse
import csv
import sys

def calculate( dataFile, ithAttr):


    numObj, minValue, maxValue, mean, stdev, Q1, median, Q3, IQR = [0,"inf","-inf",0,0,0,0,0,0]

    rows = []
    with open(file, 'r') as csvfile:
        csvreader = csv.reader(csvfile)
        for row in csvreader:
            rows.append(row)

    columniStr = [row[ithAttr-1] for row in rows]
    columniFloat = []
    for value in columniStr:
        try:
            columniFloat.append(float(value))
        except ValueError:
            pass

在计算函数中，过去的一切都是任意数学。

我的主图是这样的：

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='calc')
    parser.add_argument('--i', type=int,
                            help="ith attribute of the dataset (2 <= i <= 29)", 
                            default=5,
                            choices=range(2,30),
                            required=True)
    parser.add_argument("--data", type=str, 
                            help="Location of the dataset file",
                            default="energydata_complete.csv", 
                            required=True)
    args = parser.parse_args()

    print ','.join(map(str,calculate(args.data, args.i)))

Answer 1

with open(file

您拼写错误 dataFile。

file 是文件对象的内置 Python 数据类型，因此您不小心试图打开一个类型。

TypeError: coercing to Unicode: need string or buffer, type found when running python file

TypeError: coercing to Unicode: need string or buffer, type found when running python file

python

csv

unicode

typeerror

argparse