我有一个包含以下内容的文本文件:
Week OrangeTotal ODifference AppleTotal ADifference
1 2 - 3 -
2 5 ? 4 ?
3 10 ? 10 ?
4 50 ? 100 ?
我希望跳过第一行,因为它是新年的开始,但是填写旁边的列,减去该行和下面的行。
应该是:
Week OrangeTotal ODifference AppleTotal ADifference
1 2 - 3 -
2 5 3 4 1
3 10 5 10 6
4 50 40 100 90
答案 0 :(得分:1)
import os
def main():
name = 'log.txt'
tmpName = 'tmp.txt'
f = open(name, 'r')
tmp = open(tmpName, 'w')
titleLine = f.readline().strip()
tmp.write(titleLine+'\n')
prevLine = f.readline().strip()
tmp.write(prevLine+'\n')
prevLine = prevLine.split('\t')
for line in f:
line = line.split('\t')
line[2] = str(int(line[1]) - int(prevLine[1]))
line[4] = str(int(line[3]) - int(prevLine[3]))
prevLine = line
displayLine=''
for i in range(len(line)-1):
displayLine += line[i]+'\t'
displayLine += line[len(line)-1]
tmp.write(displayLine+'\n')
f.close()
tmp.close()
os.remove(name)
os.rename(tmpName, name)
main()
答案 1 :(得分:0)
import os
import sys
ds = open("Path.txt",'r').readlines()
a = list()
b = list()
for words in ds[1:]:
a.append(words)
for words in ds:
b.append(words)
for lines in a:
again = int(lines)
for words in b:
bse = int(words)
print bse-again
答案 2 :(得分:0)
到目前为止,我认为您可能更容易使用for for lines in ds[1:]:
循环等for循环中的每一行。同样重要的是要注意,readlines会生成文件行的数组。
所以ds[0]
= 'Week OrangeTotal ODifference AppleTotal ADifference'
所以你需要循环遍历
old=0 # this is to store the last value
done = list()
for i in range(1, len(ds), 1): #[range()][1]
l=0 # we define l here so that the garbage collector does not decide we no longer need it
if(old!=0): #if this is not the first one
l = ds[i].split()
# [split()][2] gets rid of whitespace and turns it into a list
for v in range(1, 3, 2):
#we skip the first value as that is the week and then next as that is the answer
ds[v+1] = ds[v] - old[v] #here is where we do the actual subtraction and store the value
old = l #when we are done we set the row we finished as old
done[i] = l.join(" ")
print(str(done[i]))
你从这里做的是你的决定