我正在尝试上传 CSV 文件，对其进行处理以生成结果，然后写回（下载）包含结果的新 CSV 文件。
我对 Flask 很陌生，我无法获得“正确的”csv.reader对象进行迭代和处理。
这是到目前为止的代码，
__author__ = 'shivendra'
from flask import Flask, make_response, request
import csv
app = Flask(__name__)
def transform(text_file_contents):
return text_file_contents.replace("=", ",")
@app.route('/')
def form():
return """
<html>
<body>
<h1>Transform a file demo</h1>
<form action="/transform" method="post" enctype="multipart/form-data">
<input type="file" name="data_file" />
<input type="submit" />
</form>
</body>
</html>
"""
@app.route('/transform', methods=["POST"])
def transform_view():
file = request.files['data_file']
if not file:
return "No file"
file_contents = file.stream.read().decode("utf-8")
csv_input = csv.reader(file_contents)
print(file_contents)
print(type(file_contents))
print(csv_input)
for row in csv_input:
print(row)
result = transform(file_contents)
response = make_response(result)
response.headers["Content-Disposition"] = "attachment; filename=result.csv"
return response
if __name__ == "__main__":
app.run(host='0.0.0.0', port=5001, debug=True)
终端输出是
127.0.0.1 - - [12/Oct/2015 02:51:53] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [12/Oct/2015 02:51:59] "POST /transform HTTP/1.1" 200 -
4,5,6
<class 'str'>
<_csv.reader object at 0x105149438>
['1']
['', '']
['2']
['', '']
['3']
[]
['4']
['', '']
['5']
['', '']
['6']
而我读到的文件是
当我迭代 csv.reader 对象时，我做错了什么，没有得到代表 2 行的 2 个列表？
