What does Tilda mean in Pandas?

Question

question@mail.ru · 01.01.1970 03:00

What does Tilda mean in Pandas?

What does Tilda mean in this case?

  df.loc [~ non_numberic_profits]      in the Stolbets  non_numberic_profits  Lines were set that do not meet the type of data  float . That is, not numbers, but some letters or symbols. 
   What does Tilda mean in this case? What function does it perform? 
   after this time, the following line of code 
    df.profit = " df.profit.apply (pd.to_numeric)      as I understand it, it transforms it precisely into the data type  float . But what does she transform? The remaining values? I do not quite understand what the operator Tilda performs in this case.

0

1

Answer 1

answer@mail.ru · 01.01.1970 03:00

This is an operation not , which is often used to invert logical columns/meanings.

:

Another Common Operation Is the Use of Boolean Vectors to Filter Data. The Operators are: | for or, & amp; for and, and ~ for not.
  in [ 475 ]: s = pd.series (np.random.choice ([ true ,  false ], size =  5 )) in [ 476 ]: sout [ 476 ]:   0   true    1   true    2   false    3   true    4   trye  dtype:  bool  in [ 477 ]: ~ sout [ 477 ]:   0   false    1   false    2   true    3   false    4   false  dtype:  bool   
upd: what is the command df.loc [~ non_numberic_profits] this command The frames filter the frame in such a way that only those lines of the frame are selected for which in the corresponding position non_numberic_profits is the value of false note: the length of the non_numberic_profits must coincide with the length (number of lines) df . upd2: What is the command df.profit = df.profit.apply (pd.to_numeric) : This is not a very effective way to convert all the column values to the numerical type of data int64 or float64 it is better to do this So: df [ "propan>] = pd.to_numeric (df [ "" Profit "" ], errors = "" coerce "" )

What does Tilda mean in Pandas?

Blogs

How to work with strings in Python: search, replace, merge

Do you need to know math to learn Python?

What is more important: theory or practice in learning Python

Lambda-functions in Python: what are they and how to use them?

Python hosts and scrolls: why do you need them?

Latest

Similar