读取一个文件并每行计数一次

Question

如何统计每一行。

def file_size(filename): 
    infile = open(filename) 
    for line in infile: 
     return (len(line)) 
    infile.close() 

我的代码只是计算第一行的致命词，我需要在整个文件名中计算总词数。

Answer 1

>>> def file_size(filename): 
    infile = open(filename,'r') 
    count=0 
    total_line=0; 
    for line in infile: 
      total_line+=1 
      for i in line: 
        count+=1 
    infile.close() 
    return("Total Char = "+str(count) +" Total Lines = "+str(total_line)) 



>>> file_size("Cookie.py") 
'Total Char = 238 Total Lines = 5' 

Answer 2

我会做这样的事情：

def file_size(filename): 
    with open(filename) as f: 
     return sum(len(_.split()) for _ in f.readlines()) 

Answer 3

def file_size(filename): 
    lines = [] 
    with open(filename) as infile: 
     total = 0 
     for line_num, line in enumerate(infile, 1): 
      print("The length of line", line_num, "is", len(line)) 
      lines.append(len(line)) 
      total += 1 
     print("There are a total of", total, "lines") 
    return lines, total