这里对python来说是新的。我正在尝试编写一个程序来计算句子中的平均单词长度,我必须使用 .split 命令来完成。顺便说一句,IM 使用 Python 3.2
这是我到目前为止写的
sentence = input("Please enter a sentence: ")
print(sentence.split())
到目前为止,我让用户输入一个句子,它成功地拆分了每个单独的单词他们输入,例如:嗨,我的名字是鲍勃,它将其拆分为 ['嗨'
, '我的', '名字', 'is', 'bob']但现在我不知道如何让它计算每个单词并找到句子的平均长度。
在Python 3中(你似乎正在使用):
>>> sentence = "Hi my name is Bob"
>>> words = sentence.split()
>>> average = sum(len(word) for word in words) / len(words)
>>> average
2.6
您可能希望过滤掉标点符号以及零长度的单词。
>>> sentence = input("Please enter a sentence: ")
过滤掉不重要的标点符号。如果需要,可以向标点符号字符串添加更多内容:
>>> filtered = ''.join(filter(lambda x: x not in '".,;!-', sentence))
拆分为单词,并删除长度为零的单词:
>>> words = [word for word in filtered.split() if word]
并计算:
>>> avg = sum(map(len, words))/len(words)
>>> print(avg)
3.923076923076923
>>> sentence = "Hi my name is Bob"
>>> words = sentence.split()
>>> sum(map(len, words))/len(words)
2.6
简明版本:
average = lambda lst: sum(lst)/len(lst) #average = sum of numbers in list / count of numbers in list
avg = average([len(word) for word in sentence.split()]) #generate a list of lengths of words, and calculate average
分步版本:
def average(numbers):
return sum(numbers)/len(numbers)
sentence = input("Please enter a sentence: ")
words = sentence.split()
lengths = [len(word) for word in words]
print 'Average length:', average(lengths)
输出:
>>>
Please enter a sentence: Hey, what's up?
Average length: 4
def main():
sentence = input('Enter the sentence: ')
SumAccum = 0
for ch in sentence.split():
character = len(ch)
SumAccum = SumAccum + character
average = (SumAccum) / (len(sentence.split()))
print(average)
def averageWordLength(mystring):
tempcount = 0
count = 1
wordcount = 0
try:
for character in mystring:
if character == " ":
tempcount +=1
if tempcount ==1:
count +=1
else:
tempcount = 0
try:
if character.isalpha(): #sorry for using the .isalpha
wordcount += 1
except:
wordcount = wordcount + 0
if mystring[0] == " " or mystring.endswith(" "): #i'm sorry for using the .endswith
count -=1
try:
result = wordcount/count
if result == 0:
result = "No words"
return result
else:
return result
except ZeroDivisionError:
error = "No words"
return error
except Exception:
error = "Not a string"
return error
mystring ="你有多么大的空间!输出是 3.0,我没有使用 split
作为模块:
import re
def avg_word_len(s):
words = s.split(' ') # presuming words split by ' '. be watchful about '.' and '?' below
words = [re.sub(r'[^ws]','',w) for w in words] # re sub '[^ws]' to remove punctuations first
return sum(len(w) for w in words)/float(len(words)) # then calculate the avg, dont forget to render answer as a float
if __name__ == "__main__":
s = raw_input("Enter a sentence")
print avg_word_len(s)
s = input("Please enter a sentence: ")
avg_word_len = len(s.replace(' ',''))/len(s.split())
print('Word average =', avg_word_len)
输出:
Please enter a sentence: this is a testing string
Word average = 4.0
注意:这是一个普通的用例,可以根据需要应用其他边界条件。
text = input()
words=text.split()
single=''.join(words)
average=len(single)/len(words)
print(average)
def average():
value = input("Enter the sentence:")
sum = 0
storage = 0
average = 0
for i in range (len(value)):
sum = sum + 1
storage = sum
average = average+storage
print (f"the average is :{average/len(value)}")
return average/len(value)
average()