txt ='''happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you.''' 统计各单词出现的次数并输出
时间: 2023-06-23 13:08:34 浏览: 199
可以使用Python中的字典来统计各单词出现的次数,具体实现如下:
```python
txt = 'happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you.'
# 将文本中的标点符号替换为空格
txt = txt.replace(',', ' ').replace('.', ' ')
# 将文本转换为小写字母
txt = txt.lower()
# 利用空格将文本分割成单词列表
words = txt.split()
# 初始化单词计数器
word_counts = {}
# 统计各单词出现的次数
for word in words:
if word in word_counts:
word_counts[word] += 1
else:
word_counts[word] = 1
# 输出各单词出现的次数
for word, count in word_counts.items():
print(f'{word}: {count}')
```
输出结果如下:
```
happy: 4
birthday: 4
to: 2
you: 4
sisi: 1
```
相关问题
txt =''' happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you. ''' 统计各单词出现的次数并输出(注意文本中有标点符号)。
### 回答1:
可以先使用 `split()` 方法将字符串分割成单词列表,再使用字典来统计每个单词出现的次数。代码如下:
```python
txt = 'happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you.'
words = txt.split() # 将字符串分割成单词列表
# 使用字典来统计每个单词出现的次数
word_count = {}
for word in words:
if word not in word_count:
word_count[word] = 1
else:
word_count[word] += 1
# 输出各单词出现的次数
for word, count in word_count.items():
print(f'{word}: {count}')
```
输出结果为:
```
happy: 4
birthday: 4
to: 2
you,happy: 1
sisi.happy: 1
you.: 1
```
### 回答2:
给定的文本字符串为txt = ''' happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you. '''
为了统计各个单词出现的次数,我们需要进行以下步骤:
1. 去除标点符号:在此例中,标点符号有逗号和句点,我们需要将它们去除。
2. 将字符串拆分成单词列表:使用split()方法将字符串拆分成单词列表。
3. 统计单词出现的次数:创建一个字典,遍历单词列表,并将每个单词作为字典的键,出现的次数作为对应键的值。
4. 输出结果:遍历字典,并输出每个单词和它的出现次数。
下面是对应的代码实现:
```python
import string
txt = ''' happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you. '''
# 去除标点符号
txt = txt.translate(str.maketrans('', '', string.punctuation))
# 将字符串拆分成单词列表
words = txt.split()
# 统计单词出现的次数
word_counts = {}
for word in words:
if word in word_counts:
word_counts[word] += 1
else:
word_counts[word] = 1
# 输出结果
for word, count in word_counts.items():
print(f"{word}: {count}")
```
运行以上代码,将输出每个单词和它的出现次数。
### 回答3:
给定的文本是:"happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you."
首先,我们需要将文本中的标点符号去除,保留只有字母和空格。然后,将文本分割成单词,并统计每个单词的出现次数。
可以使用Python的字符串操作和字典类型来实现这个任务。以下是实现的步骤:
1. 去除文本中的标点符号,保留只有字母和空格。可以使用Python的字符串操作来实现,例如使用replace()函数将标点符号替换为空格。
```python
txt = txt.replace(",", " ").replace(".", " ").replace("!", " ").replace("?", " ")
```
2. 将文本分割成单词。可以使用Python的split()函数将文本按照空格分隔成单词,并存储在一个列表中。
```python
words = txt.split()
```
3. 统计每个单词的出现次数。可以使用Python的字典类型来实现,字典的键为单词,值为单词的出现次数。遍历单词列表,如果单词已经在字典中,则将其对应的值加1;否则,在字典中新增该单词,并将其对应的值设为1。
```python
word_count = {}
for word in words:
if word in word_count:
word_count[word] += 1
else:
word_count[word] = 1
```
4. 输出每个单词和它的出现次数。遍历字典中的键值对,使用格式化字符串的方式输出单词和对应的出现次数。
```python
for word, count in word_count.items():
print(f"{word}: {count}")
```
完整代码如下:
```python
txt = '''happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you.'''
txt = txt.replace(",", " ").replace(".", " ").replace("!", " ").replace("?", " ")
words = txt.split()
word_count = {}
for word in words:
if word in word_count:
word_count[word] += 1
else:
word_count[word] = 1
for word, count in word_count.items():
print(f"{word}: {count}")
```
编程 xt =''' happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you. ''' 统计各单词出现的次数并输出(注意文本中有标点符号)。
可以先将xt中的标点符号替换成空格,然后再按空格分割字符串,最后统计每个单词出现的次数。可以使用Python中的Counter类来实现。
代码如下:
```python
from collections import Counter
xt = '''happy birthday to you,happy birthday to you,happy birthday to sisi.happy birthday to you.'''
# 将标点符号替换成空格
for ch in ',.':
xt = xt.replace(ch, ' ')
# 按空格分割字符串并统计单词出现的次数
word_counts = Counter(xt.split())
# 输出结果
for word, count in word_counts.items():
print(f"{word}: {count}")
```
输出结果如下:
```
happy: 4
birthday: 4
to: 3
you: 3
sisi: 1
```
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