[英]How to get last character in string?
我想找出哪個單詞的最后一個字符是'e',我想用'ing'替換'e'。 這個過程之后想append這些在數組里等新詞
words= ['example', 'serve', 'recognize', 'ale']
for x in words:
size = len(x)
if "e" == x[size - 1]:
words.append(x.replace(x[-1], 'ing'))
print(words)
output
['example', 'serve', 'recognize', 'ale', 'ingxampling', 'singrving', 'ringcognizing', 'aling']
我想像這樣得到 output
['example', 'serve', 'recognize', 'ale', 'exampling', 'serving', 'recognizing', 'aling']
嘗試這個:
words = ['example', 'serve', 'recognize', 'ale']
for x in words:
if x[-1] == 'e':
words.append(x[:-1] + 'ing')
print(words)
或者如果你想要一個 1 班輪:
words = [*words, *[x[:-1] + 'ing' for x in words if x[-1] == 'e']]
與 saradartur 的解決方案非常相似,但帶有過濾功能(我還添加了str.endswith
的使用):
words = ['example', 'serve', 'recognize', 'ale']
words.extend(word[:-1] + 'ing' for word in words if word.endswith('e'))
print(words)
Output
['example', 'serve', 'recognize', 'ale', 'exampling', 'serving', 'recognizing', 'aling']
“如何在 Python 上獲取字符串中的最后一個字符?”的答案很簡單:
my_string = "hello"
last_char = last_char = my_string[-1:]
print(last_char)
>>> o
然后可以將其應用於解決您的代碼嘗試執行的操作:
words= ['example', 'serve', 'recognize', 'ale']
for x in words:
last_char = x[-1:]
if last_char == "e":
words.append(x[:-1]+"ing")
print(words)
>>> ['example', 'serve', 'recognize', 'ale', 'exampling', 'serving', 'recognizing', 'aling']
看起來你真的不想得到最后一個字符,而是檢查最后一個字符。 無論如何,一個可以處理任意長后綴的版本:
>>> suffix, replacement = 'e', 'ing'
>>> for word in words:
if word.endswith(suffix):
print(word.removesuffix(suffix) + replacement)
exampling
serving
recognizing
aling
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