用逗号拆分并忽略 if 逗号引用元组列表中的数据

问：

我有一个元组列表。

lt = [('051623', 'O143', '1.23', '2023-05-16T18:30:00', '1M allen', 'millan'), ('051623', 'O207', '1.23', '2023-05-16T18:35:00', 'nM Mn, 4nM, 35uM Fe', 'wilo')]

需要通过逗号分隔转换为csv字符串，但在拆分引号内的逗号时要忽略：预期如下。

'051623','O143','1.23','2023-05-16T18:30:00','1M allen','millan'
'051623', 'O207', '1.23', '2023-05-16T18:35:00','nM Mn, 4nM, 35uM Fe','wilo'

我试过了但没有工作：

csv_string = '\n'.join(",".join([element if element else 'None' for element in tup]) for tup in lt)

python list csv 元组

lt = [
  ('051623', 'O143', '1.23', '2023-05-16T18:30:00', '1M allen', 'millan'), 
  ('051623', 'O207', '1.23', '2023-05-16T18:35:00', 'nM Mn, 4nM, 35uM Fe', 'wilo'),
]

import io
import csv


# Allows saving the csv output to a string instead of a file
f = io.StringIO(newline='')    

writer = csv.writer(
    f,
    quotechar="'",
    quoting=csv.QUOTE_ALL,
)
writer.writerows(lt)

# `getvalue()` returns a string containing the csv output
print(f.getvalue())

它输出

'051623','O143','1.23','2023-05-16T18:30:00','1M allen','millan'
'051623','O207','1.23','2023-05-16T18:35:00','nM Mn, 4nM, 35uM Fe','wilo'

0赞 nigh_anxiety 10/10/2023 #2

如果您只是尝试将行重构为 csv 数据而不实际写入 CSV，则可以使用以下命令，它将每个单独的值括在双引号中

lines=[]
for tup in lt:
    lines.append('"' + '","'.join(tup)+'"')

print(lines)
# [
# '"051623","O143","1.23","2023-05-16T18:30:00","1M allen","millan"',
# '"051623","O207","1.23","2023-05-16T18:35:00","nM Mn, 4nM, 35uM Fe","wilo"'
# ]

或者，如果您只想换行包含逗号的单元格：

lines=[]
for tup in lt:
    line=''
    for el in tup:
        if ',' in el:
            el = '"'+el+'"'
        line += el + ','
    lines.append(line[:-1]) # Strip the extra , at the end

print(lines)
# [
#   '051623,O143,1.23,2023-05-16T18:30:00,1M allen,millan',
#   '051623,O207,1.23,2023-05-16T18:35:00,"nM Mn, 4nM, 35uM Fe",wilo'
# ]

1赞 Reilas 10/10/2023 #3

下面是一个示例。

s = '\n'.join([','.join([f"'{y}'" for y in x]) for x in lt])

输出

'051623','O143','1.23','2023-05-16T18:30:00','1M allen','millan'
'051623','O207','1.23','2023-05-16T18:35:00','nM Mn, 4nM, 35uM Fe','wilo'

此外，您需要对文本中的任何单引号进行转义。

s = '\n'.join([','.join([f"'{y}'" for y in [z.replace("'", r"\'") for z in x]]) for x in lt])

0赞 XMehdi01 10/16/2023 #4

我的代码遍历列表，通过在元组中添加单引号来格式化元组中的每个元素，并用逗号连接它们。如您的问题中所述：lt

lt = [
    ("051623", "O143", "1.23", "2023-05-16T18:30:00", "1M allen", "millan"),
    ("051623", "O207", "1.23", "2023-05-16T18:35:00", "nM Mn, 4nM, 35uM Fe", "wilo"),
]
for words in lt:
    formatted_words = []
    for word in words:
        formatted_word = "'{}'".format(word)
        formatted_words.append(formatted_word)
    formatted_lt = ",".join(formatted_words)
    print(formatted_lt)

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