I'm trying to extract a date from a string and change the date format from yyyy-mm-dd to yyyy/mm/dd. Somehow I got it wrong.
I read through the links below to help me get there, but need a quick hand.
import re
import datetime
str = "2017/09/15 07:11:00"
x = re.match( r'([^\s] )',str)
new_x = datetime.datetime.strptime("re.match( r'([^\s] )',str)", "%Y/%m/%d").strftime("%Y-%m-%d")
print(x)
print(new_x)
CodePudding user response：
Your current syntax is not valid, because you are passing the call to re.match as a literal string. Instead, try doing a replacement on the date portion only via a regex replacement with a callback function:
import re
import datetime
str = "2017/09/15 07:11:00"
output = re.sub(r'^(\S )', lambda m: datetime.datetime.strptime(m.group(1), "%Y/%m/%d").strftime("%Y-%m-%d"), str)
print(output) # 2017-09-15 07:11:00
CodePudding user response：
I converted it using simple string slicing like this:
import datetime
string = "2017/09/15 07:11:00"
string = string[0:10]
new_x = datetime.datetime.strptime(string, "%Y/%m/%d").strftime("%Y-%m-%d")
print(new_x)
CodePudding user response：
First of all you have to convert string to datetime object and than you can convert a datetime.
import datetime
str = "2017/09/15 07:11:00"
converted_time = datetime.datetime.strptime(str, "%Y/%m/%d %H:%M:%S")
print(converted_time.strftime("%Y-%m-%d %H:%M:%S"))
or if datetime object is not needed than you can just use a replace:
str = "2017/09/15 07:11:00"
str = str.replace("/", "-")
print(str)