我有兩個問題：

a)Python csv模塊無法正確處理特定csv文件

我在database.csv中有以下數據"AAAAAAAA" , 5.4817, 0.0000, 0.0000, 0.0000, 65.8370

"n,m-BBBBBBBBB" , 1.7897, 675.3787, 1234.7865, 47.0000, 42.0070

請注意，雙引號和逗號之間有空格。

我使用下面的腳本來讀取文件，第一列將被解碼為"AAAAAAAA "，而不是{}

^{pr2}$

輸出是['AAAAAAAA ', ' 5.4817', ' 0.0000', ' 0.0000', ' 0.0000', ' 65.8370']

['n,m-BBBBBBBBB ', ' 1.7897', ' 675.3787', ' 1234.7865', ' 47.0000', ' 42.0070']

為了去掉空白，我這樣做import csv

def read_csv_data(path):

col_type = [str, float, float, float, float, float]

with open(path, 'rU') as f:

f_csv = csv.reader(f)

for row in f_csv:

row = tuple(cast(val.strip()) for cast, val in zip(col_type, row))

yield row

for row in read_csv_data('database.csv'):

print(row)

輸出現在是('AAAAAAAA', 5.4817, 0.0, 0.0, 0.0, 65.8370)

('n,m-BBBBBBBBB', 1.7897, 675.3787, 1234.7865, 47.0, 42.007)

b)使用namedtuple將csv數據讀入內存

對于相同的csv文件database.csv，我使用另一個腳本：import csv

from collections import namedtuple

def read_csv_data(path):

col_type = [str, float, float, float, float, float]

Gas = namedtuple("Gas", ["gas", "sf", "h1", "h2", "h3", "m"])

with open(path, 'rU') as f:

f_csv = csv.reader(f)

for row in f_csv:

row = list(cast(val.strip()) for cast, val in zip(col_type, row))

for row2 in map(Gas._make, row):

yield row2

for row in read_csv_data('database.csv'):

print(row)

錯誤是Traceback (most recent call last):

File "read_dict.py", line 17, in

for row in read_csv_data('database.csv'):

File "read_dict.py", line 13, in read_csv_data

for row2 in map(Gas._make, row):

File "", line 21, in _make

TypeError: Expected 6 arguments, got 8

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