如何在python中对齐替换的文本文件？

Question

我更改了部分列数据，但是当我替换它时，新文件文本中的列不对齐。 我将文件（输入、输出文件）发送给您，您也可以看到下图。 谢谢你的回答！

注意：我在 datar.csv 中读取了两列

你可以看到文件：https://www.shorturl.at/luFX7

import pandas as pd
df = pd.read_csv('datar.csv')
j=0
#input file
fin = open("input.txt", "rt")
#output file to write the result to
fout = open("output.txt", "wt")
#for each line in the input file
for line in fin:
    ori= df["data_o"][j]
    ori=str(ori)
    ree= df["data_r"][j]
    ree=str(ree)
    fout.write(line.replace(ori,ree))
    j=j+1
fin.close()
fout.close()

I want it to be like this picture

Answer 1

好的，
您的代码有一种更复杂的方法，但我相信它会起作用。
该程序将为每列设置一个默认宽度。

import pandas as pd
df = pd.read_csv('datar.csv')
j=0

with open("input.txt", "rt") as fino:
    fin = fino.read()                      # !!!
fin = fin.split("\n")                      # !!!

fout = open("output.txt", "wt")
out = [[]] * len(fin)                      # !!!

# --- decode part ---
iter_count = 0                             # !!!
for line in fin:
    ori= df["data_o"][j]
    ori=str(ori)
    ree= df["data_r"][j]
    ree=str(ree)
    line = line.replace(ori, ree)
    line = line.split(" ")
    while "" in line: line.remove("")
    out[iter_count].append(line)
    iter_count += 1

# --- padding part ---
column_count = len(out[0])
row_count = len(out)
for column in range(column_count):
    maxl = []
    for row in range(row_count):
        maxl.append(len(out[row][column]))
    maxl = max(maxl) + 1
    for row in range(row_count):
        pad = " " * (maxl - len(out[row][column]))
        out[row][column] = pad + out[row][column]

# --- writting part ---
for row in out:
    for num in row:
        fout.write(num)
    fout.write("\n")

注意，我修改了您原始代码的顶部。

如果你发表，请提及我。

Answer 2

也许添加一个默认宽度：

# e.g: 6 characters lenght
# [...] 
    line = line.replace(ori, ree)      # get line after convert
    line_original_width = len(line)    # get lenght of line
    if line_original_width < 6:        # check if fill is necessary
        fill = 6 - line_original_width # get amount of necessary fill
        line = (" " * fill) + line     # fill the left with space
    fout.write(line)                   # write all in the file
# [...]

否则，您可以使用f-string 执行相同的操作。但是我不能给你举个例子，因为我不是很擅长。