Python的 - 如何打印數字，句號和逗號的數量在文件

Question

def showCounts(fileName): 
lineCount = 0 
wordCount = 0 
numCount = 0 
comCount = 0 
dotCount = 0 

with open(fileName, 'r') as f: 
    for line in f: 
     words = line.split() 
     lineCount += 1 
     wordCount += len(words) 

     for word in words: 
#    ###text = word.translate(string.punctuation) 
      exclude = set(string.punctuation) 
      text = "" 
      text = ''.join(ch for ch in text if ch not in exclude) 
      try: 
       if int(text) >= 0 or int(text) < 0: 
        numCount += 1 
       # elif text == ",": 
        # comCount += 1 
       # elif text == ".": 
        # dotCount += 1 
      except ValueError: 
       pass 

print("Line count: " + str(lineCount)) 
print("Word count: " + str(wordCount)) 
print("Number count: " + str(numCount)) 
print("Comma count: " + str(comCount)) 
print("Dot count: " + str(dotCount) + "\n") 

---

基本上，它會顯示的行數和文字的數量，但我不能得到它顯示的數量數字，逗號和點。我讀了一個文件，用戶輸入，然後顯示大量的行和單詞，但由於某種原因，它表示數字逗號和點數爲0。我評論了它給我帶來麻煩的部分。如果我刪除逗號，那麼我只是得到一個錯誤。謝謝你們

Answer 1

該代碼將遍歷每行每一個字符，並增加了1到它的變量：

numCount = 0 
dotCount = 0 
commaCount = 0 
lineCount = 0 
wordCount = 0 

fileName = 'test.txt' 

with open(fileName, 'r') as f: 
    for line in f: 
     wordCount+=len(line.split()) 
     lineCount+=1 
     for char in line: 
      if char.isdigit() == True: 
       numCount+=1 
      elif char == '.': 
       dotCount+=1 
      elif char == ',': 
       commaCount+=1 

print("Number count: " + str(numCount)) 
print("Comma count: " + str(commaCount)) 
print("Dot count: " + str(dotCount)) 
print("Line count: " + str(lineCount)) 
print("Word count: " + str(wordCount)) 

測試出來：

test.txt：

Hello, my name is B.o.b. I like biking, swimming, and running. 

I am 125 years old, and I was 124 years old 1 year ago. 

Regards, 
B.o.b 

運行：

bash-3.2$ python count.py 
Number count: 7 
Comma count: 5 
Dot count: 7 
Line count: 6 
Word count: 27 
bash-3.2$ 

一切都使得這裏的意義，除了lineCount之所以這是6是因爲新行的。在我的編輯器（nano）中，默認情況下它會在任何文件的末尾添加換行符。所以想象一下這個文本文件是這樣的：

>>> x = open('test.txt').read() 
>>> x 
'Hello, my name is B.o.b. I like biking, swimming, and running.\n\nI am 125 years old, and I was 124 years old 1 year ago.\n\nRegards,\nB.o.b \n' 
>>> x.count('\n') 
6 
>>> 

希望這有助於！

Answer 2

對於標點符號，爲什麼不只是做：

def showCounts(fileName): 
    ... 
    ... 
    with open(fileName, 'r') as fl: 
     f = fl.read() 

    comCount = f.count(',') 
    dotCount = f.count('.') 

Answer 3

您可以使用Counter類照顧它你：

from collections import Counter 

with open(fileName, 'r') as f: 
    data = f.read().strip() 
    lines = len(data.split('\n')) 
    words = len(data.split()) 
    counts = Counter(data) 
    numbers = sum(v for (k,v) in counts.items() if k.isdigit()) 

print("Line count: {}".format(lines)) 
print("Word count: {}".format(words)) 
print("Number count: {}".format(numbers)) 
print("Comma count: {}".format(counts[','])) 
print("Dot count: {}".format(counts['.']))