如何使用python

Question

我有一个要求，我需要将我的文本文件转换为csv并使用python进行操作。我的文本文件如下所示，

1. Which of the following structure are made of several layer's of cells :-
(A) Ciliated epithelium (B) Stratified epithelium
(C) Cuboidal epithelium (D) Columnar epithelium
2. Which simple epithelium tissue cells are square in vertical sections and Polygonal in horizontal section
(A) Columnar epithelium (B) Squamous epithelium
(C) Cuboidal epithelium (D) Ciliated epithelium

我想要一个CSV如下：

1, "Which of the following structure are made of several layer's of cells :-", "Ciliated epithelium", "Stratified epithelium", "Cuboidal epithelium", "Columnar epithelium"
2, "Which simple epithelium tissue cells are square in vertical sections and Polygonal in horizontal section", "Columnar epithelium", "Squamous epithelium", "Cuboidal epithelium", "Ciliated epithelium"

我尝试了多种方法但无法获得它。有什么想法解决这个问题吗？提前谢谢。

Answer 1

以下是基于示例输入的分步示例：

#!python3
import csv

# Open the original file as reading text (the default.
# Open the output file per csv documentation for csv.writer use.
with open('original.txt') as fin,open('out.csv','w',newline='') as fout:
    # Read the lines stripping leading and trailing whitespace.
    lines = [line.strip() for line in fin]
    # Set up the csv writer to quote the text fields.
    w = csv.writer(fout,quoting=csv.QUOTE_NONNUMERIC)
    # Make sure the input file has multiples of three lines.     
    if len(lines) % 3 != 0:
        raise RuntimeError('expected multiples of 3 lines')
    # Index through the lines 3-at-a-time.
    for i in range(0,len(lines),3):
        # Break apart lines and assign to columns.
        # Make sure col1 is a numeric field so it won't get quoted.
        tmp,col2 = lines[i].split('. ')
        col1 = int(tmp)
        col3,col4 = lines[i+1][4:].split(' (B) ')
        col5,col6 = lines[i+2][4:].split(' (D) ')
        w.writerow([col1,col2,col3,col4,col5,col6])

输出：

1,"Which of the following structure are made of several layer's of cells :-","Ciliated epithelium","Stratified epithelium","Cuboidal epithelium","Columnar epithelium"
2,"Which simple epithelium tissue cells are square in vertical sections and Polygonal in horizontal section","Columnar epithelium","Squamous epithelium","Cuboidal epithelium","Ciliated epithelium"

Answer 2

试试这段代码！

我还附加了csv文件的输出。

import csv

with open('log.txt', 'r') as in_file:
    stripped = (line.strip() for line in in_file)
    lines = (line.split(",") for line in stripped if line)
    with open('log.csv', 'w') as out_file:
        writer = csv.writer(out_file)
        writer.writerows(lines)