僅需10道題輕松掌握Python字串方法 | Python技能樹征題

0.前言

文本處理在幾乎所有應用程式中都會有所涉及，例如文本的搜索、替換和洗掉等操作，為了方便的處理這些常見問題，Python 字串內建了相關方法，我們就通過 10 道編程題來掌握這些常用的 Python 字串方法吧！

1. 第 1 題：字串檢查

知識點描述：Python 字串內建了多種方法用于檢測字符型別是字母、數字或者其他型別，
問題描述：請從以下選項中選出輸出為 True 的選項：
A.

string = '11.2'
result = string.isdigit()
print(result)

B.

string = '四十'
result = string.isnumeric()
print(result)

C.

string = '11.2'
result = string.isnumeric()
print(result)

D.

string = '四十'
result = string.isdigit()
print(result)

正確答案： B

2. 第 2 題：字串大小寫轉換

知識點描述：將字串中的字母進行大小寫的轉換是文本處理中常見的操作，
問題描述：將字串中每個單詞首字母轉換為大寫字母，請從以下選項中選出你認為正確的答案：
A.

string = 'Learn PYTHON from beginner to exPERT!'
result = string.upper()
print(result)

B.

string = 'Learn PYTHON from beginner to exPERT!'
result = string.capitalize()
print(result)

C.

string = 'Learn PYTHON from beginner to exPERT!'
result = string.lower().capitalize()
print(result)

D.

string = 'Learn PYTHON from beginner to exPERT!'
result = string.title()
print(result)

正確答案： D

3. 第 3 題：字串開頭或結尾匹配

知識點描述：通過指定的文本模式檢查字串的開頭或者結尾，
問題描述：請從以下選項中選出輸出為 True 的選項：
A.

choices = 'http:'
url = "https://blog.csdn.net/LOVEmy134611"
result = url.startswith(choices)
print(result)

B.

choices = ['http:', 'https:']
url = "https://blog.csdn.net/LOVEmy134611"
result = url.startswith(choices)
print(result)

C.

choices = ['http:', 'https:']
url = "https://blog.csdn.net/LOVEmy134611"
result = url.startswith(tuple(choices))
print(result)

D.

choices = 'https:'
url = "https://blog.csdn.net/LOVEmy134611"
result = url.endswith(choices)
print(result)

正確答案： C

4. 第 4 題：字串匹配和搜索

知識點描述：匹配或者搜索特定模式的文本，
問題描述：請從以下選項中選出能夠正確搜索 “Python” 第一次出現位置的答案：
A.

string = "Python is very simple, Let's learn Python together"
result = string.startswith('Python')
print(result)

B.

string = "Python is very simple, Let's learn Python together"
result = string.rfind('Python')
print(result)

C.

string = "Python is very simple, Let's learn Python together"
result = string.find('Python')
print(result)

D.

string = "Python is very simple, Let's learn Python together"
result = string.find('python')
print(result)

正確答案： C

5. 第 5 題：字串替換

知識點描述：在字串中搜索和匹配指定的文本，并進行使用其它字符進行替換，
問題描述：請從以下選項中選出能夠正確將第一次出現的 “better” 替換為 “worse” 的答案：
A.

string = """Beautiful is better than ugly.
            Explicit is better than implicit.
            Simple is better than complex."""
index = string.find('better')
result = string.replace('better', 'worse', 1)
print(result)

B.

string = """Beautiful is better than ugly.
            Explicit is better than implicit.
            Simple is better than complex."""
index = string.find('better')
result = string.replace('better', 'worse', 0)
print(result)

C.

string = """Beautiful is better than ugly.
            Explicit is better than implicit.
            Simple is better than complex."""
index = string.find('better')
result = string.replace('better', 'worse', -1)
print(result)

D.

string = """Beautiful is better than ugly.
            Explicit is better than implicit.
            Simple is better than complex."""
result = string.replace('better', 'worse')
print(result)

正確答案：A

6. 第 6 題：洗掉字串中不需要的字符

知識點描述：去掉文本字串開頭,結尾或者中間不需要的字符，
問題描述：請從以下選項中選出能夠正確去除開頭和結尾空白字符(空白字符包括空格、換行符和 tab 鍵)的選項：
A.

string = "  \n     Beautiful is better than ugly.  \n     "
result = string.replace('\n', '')
print(result)

B.

string = "  \n     Beautiful is better than ugly.  \n     "
result = string.rstrip()
print(result)

C.

string = "  \n     Beautiful is better than ugly.  \n     "
result = string.strip(' ')
print(result)

D.

string = "  \n     Beautiful is better than ugly.  \n     "
result = string.lstrip().rstrip()
print(result)

正確答案：D

7. 第 7 題：字串對齊

知識點描述：通過指定的對齊方式來格式化字串，
問題描述：將給定字串居中，并指定回傳字串長度為40，使用等號("=")進行填充，請從以下選項中選出你認為正確的答案：
A.

string = "Beautiful is better than ugly."
result = string.center(len(string)+40, '=')
print(result)

B.

string = "Beautiful is better than ugly."
result = string.center(40, '=')
print(result)

C.

string = "Beautiful is better than ugly."
result = string.rjust(40,'=')
print(result)

D.

string = "Beautiful is better than ugly."
result = string.ljust(40,'=')
print(result)

正確答案：B

8. 第 8 題：字串分割

知識點描述：將一個大的字串分割為若干個小的字串，
問題描述：將給定字串劃分為單詞，并將單詞首字母大寫，請從以下選項中選出你認為正確的答案：
A.

string = 'Beautiful is better than ugly.'
result = string.split()
result = [i.strip('.') for i in result]
print(result)

B.

string = 'Beautiful is better than ugly.'
result = string.split()
result = [i.title() for i in result]
print(result)

C.

string = 'Beautiful is better than ugly.'
result = string.split()
result = [i.title().strip('.') for i in result]
print(result)

D.

string = 'Beautiful is better than ugly.'
result = string.split()
result = [i.strip('.').upper() for i in result]
print(result)

正確答案：C

9. 第 9 題：字串的合并拼接

知識點描述：將幾個小的字串合并為一個大的字串，
問題描述：將串列中元素合并為一個大的字串，請從以下選項中選出你認為正確的答案：
A.

list_part = ['The', 'area', 'of', 'the', 'school', 'is', 1.7, 'million', 'square', 'meters.']
result = ' '.join(list_part)
print(result)

B.

list_part = ['The', 'area', 'of', 'the', 'school', 'is', 1.7, 'million', 'square', 'meters.']
result = ' '.join(str(i) for i in list_part)
print(result)

C.

list_part = ['The', 'area', 'of', 'the', 'school', 'is', 1.7, 'million', 'square', 'meters.']
result = ''.join(list_part)
print(result)

D.

list_part = ['The', 'area', 'of', 'the', 'school', 'is', 1.7, 'million', 'square', 'meters.']
result = ''.join(str(i) for i in list_part)
print(result)

正確答案：B

10. 第 10 題：在字串中插入變數

知識點描述：創建含有變數的字串，最終變數被值字串替換掉，
問題描述：使用變數值替換字串中的變數，請從以下選項中選出你認為正確的答案：
A.

string = 'The price of {fruit} is ${price}.'
result = string.format()
print(result)

B.

string = 'The price of {fruit} is ${price}.'
result = string.format(fruit = 'apple')
print(result)

C.

string = 'The price of {fruit} is ${price}.'
fruit = 'apple'
price = 2
result = string.format(vars())
print(result)

D.

string = 'The price of {fruit} is ${price}.'
fruit = 'apple'
price = 2
result = string.format_map(vars())
print(result)

正確答案：D

試題代碼地址

https://codechina.csdn.net/LOVEmy134611/python_problem