我的程序输出中出现空格。知道如何摆脱它们吗？

Question

我正在开发一个 python 程序，该程序打印字符串的子字符串，但要打印的子字符串是以元音开头的。我已经应用了逻辑，但我在输出中得到了我不想要的空间。任何帮助，将不胜感激。以下是我的代码：

extract = []
W = str(input("Please enter any string: "))
vowels = ['a','e','i','o','u']

for i in W:
    extract.append(i)
print(extract)

j = 1
for i in range(len(W)):
    if W[i] in vowels:
        while j <= len(W):
            X = W[i:j]
            j += 1
            print(X)
    j = 1

下面是我输入的字符串的输出：'somestring'

Please enter any string: somestring
['s', 'o', 'm', 'e', 's', 't', 'r', 'i', 'n', 'g']

o
om
ome
omes
omest
omestr
omestri
omestrin
omestring



e
es
est
estr
estri
estrin
estring







i
in
ing

看到我说的空间了吗？我不需要它们。我的输出应该是这样的：

o
om
ome
omes
omest
omestr
omestri
omestrin
omestring
e
es
est
estr
estri
estrin
estring
i
in
ing

Answer 1

尝试以下操作：

extract = []
W = str(input("Please enter any string: "))
vowels = ['a','e','i','o','u']

for i in W:
    extract.append(i)
print(extract)

for i in range(len(W)):
    j = i + 1 
    if W[i] in vowels:
        while j <= len(W):
            X = W[i:j]
            j += 1
            print(X)

打印这些新行的原因是因为您正在打印空字符串；想想每个 i.

的 j 是什么

例如，当 i 可能为 3 时，您将 j 重置为 1。 W[3:1] 是 ""

Answer 2

您可以将 python 字符串的终止字符修改为 null，并且仅在 X 存在时打印换行符。

extract = []
W = str(input("Please enter any string: "))
vowels = ['a','e','i','o','u']

for i in W:
    extract.append(i)
print(extract)

j = 1
for i in range(len(W)):
    if W[i] in vowels:
        while j <= len(W):
            X = W[i:j]
            j += 1
            # Here are the changes
            print(X, end="") #add end=""
            if X != "":
                print() #print new line when x exists
    j = 1

Answer 3

要回答这个问题，为什么会有空格，这个修改后的代码版本应该可以帮助您理解。你可以看到当你得到像 W[3:2] = '' 这样的切片的值时生成的空间我不确定你为什么制作字符串的列表版本，“extract”，你不使用它。

vowels = ['a','e','i','o','u']

W = 'somestring'

j = 1
for i in range(len(W)):
    if W[i] in vowels:
        while j <= len(W):
            X = W[i:j]
            j += 1
            print(f"W[{i}:{j}] is Substring: {X}")
    j = 1

W[1:2] is Substring: 
W[1:3] is Substring: o
W[1:4] is Substring: om
W[1:5] is Substring: ome
W[1:6] is Substring: omes
W[1:7] is Substring: omest
W[1:8] is Substring: omestr
W[1:9] is Substring: omestri
W[1:10] is Substring: omestrin
W[1:11] is Substring: omestring
W[3:2] is Substring: 
W[3:3] is Substring: 
W[3:4] is Substring: 
W[3:5] is Substring: e
W[3:6] is Substring: es
W[3:7] is Substring: est
W[3:8] is Substring: estr
W[3:9] is Substring: estri
W[3:10] is Substring: estrin
W[3:11] is Substring: estring
W[7:2] is Substring: 
W[7:3] is Substring: 
W[7:4] is Substring: 
W[7:5] is Substring: 
W[7:6] is Substring: 
W[7:7] is Substring: 
W[7:8] is Substring: 
W[7:9] is Substring: i
W[7:10] is Substring: in
W[7:11] is Substring: ing

我的程序输出中出现空格。知道如何摆脱它们吗？

I am getting spaces in the output of my program. Any idea how to get rid of them?

python

string

substring

slice