Question

我正在使用名为ANARCI的工具对抗体序列进行编号，程序的输出如下所示：

[((1, ' '), 'E'), ((2, ' '), 'V'), ..., ((113, ' '), 'A')]

我正在尝试将编号保存在.csv文件中，但我无法访问上面简短部分中显示的空字符串。其中一些将包含一个字母，我需要检查字符串是否为空。这是我写的代码：

with open(fileName + '.csv', 'wb') as myFile:
    # sets wr to writer function in csv module
    wr = csv.writer(myFile, quoting=csv.QUOTE_ALL)
    # writes in headers
    wr.writerow(headers)
    # iterates through numbering
    for row in numbering:
        # gets to the innermost tuple
        for tup in row:
            # checks if the string contains a letter
            if tup[1] != ' ':
                # makes the number and letter a single string
                numScheme = str(tup[0])+str(tup[1])
                # creates a list of values to write
                varList = [baNumbering,numScheme,row[1]]
                wr.writerow(varList)
            else:
                # if the string does not contain a letter, the list of values is created without the string
                varList = [baNumbering,tup[0],row[1]]
                wr.writerow(varList)
        baNumbering = baNumbering + 1

我在这背后的想法是for row in numbering:让我进入包含元组的元组，而for tup in row:将允许我检查最内层元组的索引。我想让varList成为一个包含数字的列表，编号（可能附有字母），然后是字母 - 如下：["1","1","E"]或["30","29B","Q"]。但是，我收到错误：

Traceback (most recent call last):
  File "NumberingScript.py", line 101, in <module>
    Control()
  File "NumberingScript.py", line 94, in Control
    Num()
  File "NumberingScript.py", line 86, in Num
    SaveNumbering(numbering,numberingScheme)
  File "NumberingScript.py", line 72, in SaveNumbering
    WriteFile(numbering,numberingScheme,fileName)
  File "NumberingScript.py", line 51, in WriteFile
    if tup[1] != ' ':
IndexError: string index out of range

有没有更好的方法来访问元组中的字符串？我能找到的所有资源只包括一个元组列表，并没有提到我在这里做了什么。

Answer 1

当tup得到E＆＃39; E＆＃39;价值，你试图获得一个不存在的指数。

for row in numbering:
            for tup in row:
                if tup[1] != ' ':  # Raised exception --> 'E'[1]

如果我理解你的目标，请尝试使用：

DATA = [((1, ' '), 'E'), ((2, ' '), 'V'), ((113, ' '), 'A')]

def get_tuples(data):
    for item in data:
        for element in item:
            if isinstance(element, tuple):
                yield element
            else:
                continue

for tup in get_tuples(DATA):
    print(tup)

输出

(1, ' ')
(2, ' ')
(113, ' ')

访问列表中元组的元组中的值[错误]

1 个答案: