Passing a List as an Argument You can send any data types of argument to a function (string, number, list, dictionary etc.), and it will be treated as the same data type inside the function. E.g. if you send a List as an argument, it will still be a List when it reaches the ...
... return sorted(mylist) >>> def my_sort3(mylist): # bad: modifies its argument and also returns it ... mylist.sort() ... return mylist Parameter Passing 传参 Back in Section 4.1 you saw that assignment works on values, but that the value of a structured object is a reference...
import networkx as nx # Creating a Graph G = nx.Graph() # Right now G is empty # Add a node G.add_node(1) G.add_nodes_from([2,3]) # You can also add a list of nodes by passing a list argument # Add edges G.add_ed...
These arrays are treated as if they are columns. right_on : label or list, or array-like Column or index level names to join on in the right DataFrame. Can also be an array or list of arrays of the length of the right DataFrame. These arrays are treated as if they are columns. le...
Other examples of passing a function as an argument Thekeyargument accepted bysorted,min, andmaxis just one common example of passing functions into functions. Two more function-accepting Python built-ins aremapandfilter. We’ve already seen thatfilterwillfilterour list based on a given function’...
In this example, we define a decorator that takes a function with a long parameter list and converts it into a function that takes a single argument. We apply this decorator to the foo function, and it now takes a single argument instead of four. ...
Our next example illustrates passing a function to the sorted() function. When we call the latter with a single argument (the list to be sorted), it uses the built-in comparison function cmp(). However, we can supply our own sort function, e.g. to sort by decreasing length. >>> sor...
If you call pop() with an offset, it will return the item at that offset; with no argument, it uses -1. So, pop(0) returns the head (start) of the list, and pop() or pop(-1) returns the tail (end), as shown here: >>> marxes = ['Groucho', 'Chico', 'Harpo', 'Zeppo...
\myjunk folder and showing only files that have the .py file extension. This glob pattern at the end of the ``default`` argument is required: passing ``"C:/myjunk"`` would not set the open file dialog to the C:\myjunk folder, but rather to the C:\ folder and "myjunk" as ...
# Same as def funcvar(x): return x + 1 funcvar = lambda x: x + 1 >>> print funcvar(1) 2 # an_int and a_string are optional, they have default values # if one is not passed (2 and "A default string", respectively). def passing_example(a_list, an_int=2, a_string="A...