title: Python Error FileNotFoundError: [Errno 2] No such file or directory
body: <p>I'm trying to make code and save the csv file named as
  filename = &quot;title&quot; + &quot;today's date and time&quot; + &quot;.csv&quot;</p>
  <pre><code>from datetime import date
  import csv
  
  filename = &quot;title_&quot; + str(date.today()) + &quot;.csv&quot;
  f = open(filename, &quot;w&quot;, encoding=&quot;utf-8-sig&quot;, newline=&quot;&quot;)
  writer = csv.writer(f)
  </code></pre>
  <p>this seem to be working and file is saved as &quot;title_2020-12-03.csv&quot;</p>
  <p>But I want to make file name with the time as well
  so I tried</p>
  <pre><code>from datetime import datetime
  now = datetime.now()
  today = now.strftime(&quot;%Y/%m/%d_%H:%M&quot;)
  
  filename = &quot;title_&quot; + datetime.now().strftime(&quot;%Y/%m/%d_%H:%M&quot;) + &quot;.csv&quot;
  f = open(filename, &quot;w&quot;, encoding=&quot;utf-8-sig&quot;, newline=&quot;&quot;)
  writer = csv.writer(f)
  </code></pre>
  <p>but this gives me an error</p>
  <p>FileNotFoundError: [Errno 2] No such file or directory: 'title_2020/12/03_11:22.csv'</p>
  <p>Any help would be appreciated,
  Thank you!</p>