當前代碼：filepath = "C:/Bg_Log/KLBG04.txt"with open(filepath) as fp: lines = fp.read().splitlines() with open(filepath, "w") as fp: for line in lines: print("KLBG04",line,line[18], file=fp)輸出：KLBG04 20/01/03 08:09:13 G0001 G需要靈活地移動列并使用數組或列表操作日期，如下所示KLBG04 03/01/20 G0001 G 08:09:13
4 回答
拉風的咖菲貓
TA貢獻1995條經驗 獲得超2個贊
您沒有提供示例數據，但我認為這可能有效：
filepath = "C:/Bg_Log/KLBG04.txt"
with open(filepath) as fp:
lines = fp.read().splitlines()
with open(filepath, "w") as fp:
for line in lines:
ln = "KLBG04 " + line + " " + line[18] # current column order
sp = ln.split() # split at spaces
dt = '/'.join(sp[1].split('/')[::-1]) # reverse date
print(sp[0],dt,sp[3],sp[-1],sp[-2]) # new column order
# print("KLBG04",line,line[18], file=fp)
catspeake
TA貢獻1111條經驗 獲得超0個贊
試試這個`
for line in lines:
words = line.split() # split every word
date_values = words[0].split('/') # split the word that contains date
#create a dictionary as follows
date_format = ['YY','DD','MM']
date_dict = dict(zip(date_format, date_values))
#now create a new variable with changed format
new_date_format = date_dict['MM'] + '/' + date_dict['DD'] + '/' + date_dict['YY']
print(new_date_format)
#replace the first word [index 0 is having date] with new date format
words[0] = new_date_format
#join all the words to form a new line
new_line = ' '.join(words)
print("KLBG04",new_line,line[18])
`
智慧大石
TA貢獻1946條經驗 獲得超3個贊
先嘗試split()該行，然后按您想要的順序打印列表
from datetime import datetime # use the datetime module to manipulate the date
filepath = "C:/Bg_Log/KLBG04.txt"
with open(filepath) as fp:
lines = fp.read().splitlines()
with open(filepath, "w") as fp:
for line in lines:
date, time, venue = line.split(" ") # split the line up
date = datetime.strptime(date, '%y/%m/%d').strftime('%d/%m/%y') # format your date
print("KLBG04", date, venue, venue[0], time, file=fp) # print in your desired order
慕的地6264312
TA貢獻1817條經驗 獲得超6個贊
為什么不將輸出存儲為字符串本身，并使用該split()方法在每個空格處拆分字符串，然后對索引 1 （將包含日期的索引）使用另一個拆分方法，并在每個空格處再次拆分它/（所以然后您可以操縱日期）。
for line in lines:
String output ="KLBG04",line,line[18], file=fp # Rather than printing store the output in a string #
x = output.split(" ")
date_output = x[1].split("/")
# Now you can just manipulate the data around and print how you want to #
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