str.upper() top_states = pd.DataFrame({ "size": vdata.groupby("STATE").size().sort_values(ascending=False).head(5)}).reset_index() top_states["rank"] = top_states.index top_states = top_states.set_index("STATE")
(24,8)) # Create matplotlib figure ax.plot(df_sum_weekly.index, df_sum_weekly, color="red",marker="o") ax.set_ylabel("KWh") ax.set_xlabel('Date') ax2 = ax.twinx() #Create a new Axes with an invisible x-axis and an independent y-axis positioned opposite to the original one ...
it prints the value of the local variable x (i.e., 5). However, when the function is finished and x is printed again outside of the function, it prints the value of the global variable x (i.e., 10).
Is there an ungroup by operation opposite to groupby in pandas? How to insert a pandas dataframe to an already existing table in a database? Ranking order per group in Pandas Get all keys from GroupBy object in Pandas Find unique values in a pandas dataframe, irrespective of row or column...
Using last has the opposite effect: the first row is dropped. keep, on the other hand, will drop all duplicates. If two rows are the same then both will be dropped. Watch what happens to temp_df: temp_df = movies_df.append(movies_df) # make a new copy temp_df.drop_duplicates(...
pd.notnullcan be used in the same way for the opposite effect Thefillna()method can be used to fill missing data. Fill with 0s:df['col1'] = df['col1'].fillna(0) Fill with previous value:df['col1'] = df['col1'].fillna(method='ffill') ...
This text uses the term collection instead of iterable. For rationale see Collection. <int> = len(<list>) # Returns number of items. Also works on dict, set and string. <int> = <list>.count(<el>) # Returns number of occurrences. Also `if <el> in <coll>: ...`. <int> = <...
We often want to work with subsets of aDataFrameobject. There are different ways to accomplish this including: using labels (column headings), numeric ranges, or specific x,y index locations. Selecting data using Labels (Column Headings)
<deque>.appendleft(<el>) # Opposite element is dropped if full. <deque>.extendleft(<collection>) # Passed collection gets reversed. <deque>.rotate(n=1) # Last element becomes first. <el> = <deque>.popleft() # Raises IndexError if deque is empty.Operator...
You learned how to use join() to create a string out of a list, but what if you needed to do the exact opposite and create a list from a string? One option is to use the split() method. In the next example, we start with the previously generated string, and convert it back to...