我有一些代碼，我在文本中收到一串語言。
我的目標是將此輸入轉換為串列并在字典中遍歷此串列以用作值輸出的鍵。我將此輸出發送到串列以供以后使用。
我期待的輸出是 [57, 20, 22, 52, 60... 等] 但目前，我收到
[57、無、無、無、無、無、無……等]
我的第一個輸出是正確的，但在那之后，它似乎沒有在字典中找到正確的值。
代碼如下。
l_languages = []
language_dict = { 'Afrikaans' : 57, 'Arabic' : 20, 'Assistive communication' : 21, 'AUSLAN' : 22, 'Bosnian' : 52,'Burmese' : 60, 'Cantonese' : 23, 'Croation' : 54, 'Dutch' : 50,'French' : 24, 'German' : 25, 'Greek' : 26,'Hindi' : 27, 'Indigenous Australian' : 310, 'Indonesian' : 56, 'Italian' : 28, 'Japanese' : 62, 'Korean' : 48, 'Mandarin' : 29, 'Nepali' : 55, 'Polish' : 30}
data = "Afrikaans, Arabic, Assistive communication, AUSLAN, Bosnian, Burmese, Cantonese, Croation, Dutch"
language_list = data.split(',')
for language in language_list:
id = language_dict.get(language)
l_languages.append(id)
print(l_languages)
current output = [57, None, None, None, None, None, None....etc]
uj5u.com熱心網友回復：
您忽略了語言串列中的空白。您應該洗掉前導和尾隨空格并訪問您的字典。
如果您只是在“，”處拆分串列，那么在以下每種語言前面都有一個前導空格。只是不在第一個上，它解釋了您當前的輸出
uj5u.com熱心網友回復：
看看你的language_list. 它有前導空格。您需要呼叫strip()每個元素并獲得預期的結果
l_languages = []
language_dict = { 'Afrikaans' : 57, 'Arabic' : 20, 'Assistive communication' : 21, 'AUSLAN' : 22, 'Bosnian' : 52,'Burmese' : 60, 'Cantonese' : 23, 'Croation' : 54, 'Dutch' : 50,'French' : 24, 'German' : 25, 'Greek' : 26,'Hindi' : 27, 'Indigenous Australian' : 310, 'Indonesian' : 56, 'Italian' : 28, 'Japanese' : 62, 'Korean' : 48, 'Mandarin' : 29, 'Nepali' : 55, 'Polish' : 30}
data = "Afrikaans, Arabic, Assistive communication, AUSLAN, Bosnian, Burmese, Cantonese, Croation, Dutch"
language_list = data.split(',')
print(language_list)
for language in language_list:
val = language_dict.get(language.strip())
l_languages.append(val)
print(l_languages)
['Afrikaans', ' Arabic', ' Assistive communication', ' AUSLAN', ' Bosnian', ' Burmese', ' Cantonese', ' Croation', ' Dutch'] # list with leading spaces
[57, 20, 21, 22, 52, 60, 23, 54, 50] # right result
uj5u.com熱心網友回復：
l_languages = []
language_dict = { 'Afrikaans' : 57, 'Arabic' : 20, 'Assistive communication' : 21, 'AUSLAN' : 22, 'Bosnian' : 52,'Burmese' : 60, 'Cantonese' : 23, 'Croation' : 54, 'Dutch' : 50,'French' : 24, 'German' : 25, 'Greek' : 26,'Hindi' : 27, 'Indigenous Australian' : 310, 'Indonesian' : 56, 'Italian' : 28, 'Japanese' : 62, 'Korean' : 48, 'Mandarin' : 29, 'Nepali' : 55, 'Polish' : 30}
data = "Afrikaans, Arabic, Assistive communication, AUSLAN, Bosnian, Burmese, Cantonese, Croation, Dutch"
language_list=[x.strip() for x in data.split(',')]
for language in language_list:
id = language_dict.get(language)
l_languages.append(id)
#output
[57, 20, 21, 22, 52, 60, 23, 54, 50]
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