Python 拆分一个"；。txt"；文件_Python_File_Split

Python 拆分一个"；。txt"；文件

python file

Python 拆分一个"；。txt"；文件,python,file,split,Python,File,Split,我有一个.txt文件中的数据，以逗号分隔列表的形式。例如： N12345678,B,A,D,D,C,B,D,A,C,C,D,B,A,B,A,C,B,D,A,C,A,A,B,D,D N12345678,B,A,D,D,C,B,D,A,C,C,D,B,A,B,A,C,B,D,A,C,A,A,B,D,D 我希望能够将其拆分，首先按行，然后按逗号，这样我就能够处理数据并验证它。我的代码中的所有行都变得“无效”，即使其中一些行应该是有效的，因为每行应该有26个字符。以下是我目前的代码： (filenam

我有一个.txt文件中的数据，以逗号分隔列表的形式。例如：

N12345678,B,A,D,D,C,B,D,A,C,C,D,B,A,B,A,C,B,D,A,C,A,A,B,D,D
N12345678,B,A,D,D,C,B,D,A,C,C,D,B,A,B,A,C,B,D,A,C,A,A,B,D,D

我希望能够将其拆分，首先按行，然后按逗号，这样我就能够处理数据并验证它。我的代码中的所有行都变得“无效”，即使其中一些行应该是有效的，因为每行应该有26个字符。以下是我目前的代码：

(filename+".txt").split("\n")
(filename+".txt").split(",")
with open(filename+".txt") as f:
  for line in f:
      if len(line) != 26:
          print ("invalid")
      else:
          print ("valid")

就我理解你的问题而言，你想要这个

with open(filename, 'r') as f:
    for line in f:
        if len(line.split(',')) !=26:
            print("Invalid")
        else:
            print("Valid")

它所做的只是

打开文件
逐行读取文件
对于每一行，按
```
，
```
由于
```
str.split（）
```
返回一个列表，请检查列表的长度是否为26
如果长度为26，则视为有效；否则就不行了

with open(filename, 'r') as f:
    for line in f:
        if len(line.split(',')) !=26:
            print("Invalid")
        else:
            print("Valid")

打开文件
逐行读取文件
对于每一行，按
```
，
```
由于
```
str.split（）
```
返回一个列表，请检查列表的长度是否为26
如果长度为26，则视为有效；否则就不行了

# These two lines add two strings together, returning a string
# then they split the string into pieces into a list
# because the /filename/ has no newlines in it, and probably no commas
# that changes nothing
# then the return value isn't saved anywhere, so it gets thrown away
(filename+".txt").split("\n")
(filename+".txt").split(",")

# This opens the file and reads from it line by line,
# which means "line" is a string of text for each line in the file.
with open(filename+".txt") as f:
  for line in f:

      # This checks if the line in the file is not the /number/ 26
      # since the file contains /strings/ it never will be the number 26
      if line != 26:
          print ("invalid")

      # so this is never hit
      else:
          print ("valid")

行

“N12345678，B，A，D…”

with open(filename+".txt") as f:
  for line in f:
      line_parts = line.split(",")
      if len(line_parts) != 26:
          print ("invalid")
      else:
          print ("valid")
          # line_parts is now a list of strings
          # ["N12345678" ,"B", "A", ...]

# These two lines add two strings together, returning a string
# then they split the string into pieces into a list
# because the /filename/ has no newlines in it, and probably no commas
# that changes nothing
# then the return value isn't saved anywhere, so it gets thrown away
(filename+".txt").split("\n")
(filename+".txt").split(",")

# This opens the file and reads from it line by line,
# which means "line" is a string of text for each line in the file.
with open(filename+".txt") as f:
  for line in f:

      # This checks if the line in the file is not the /number/ 26
      # since the file contains /strings/ it never will be the number 26
      if line != 26:
          print ("invalid")

      # so this is never hit
      else:
          print ("valid")

行

“N12345678，B，A，D…”

with open(filename+".txt") as f:
  for line in f:
      line_parts = line.split(",")
      if len(line_parts) != 26:
          print ("invalid")
      else:
          print ("valid")
          # line_parts is now a list of strings
          # ["N12345678" ,"B", "A", ...]

import csv

with open("C:/text.csv") as input:
    reader = csv.reader(input)
    for row in reader:
        if len(row) == 26:
            print("Valid")
        else:
            print("Invalid")

import csv

with open("C:/text.csv") as input:
    reader = csv.reader(input)
    for row in reader:
        if len(row) == 26:
            print("Valid")
        else:
            print("Invalid")

len（line）！=26

len（行）！=26