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Programmation en Python IDSI21024 (202400-667)

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I have a pandas dataframe named 'brics' with columns names given by 'country', 'capital', 'area' and 'population'. I want to construct a pandas dataframe with the only two columns 'country' and 'capital'. Which command should I use?

brics[['country', 'capital']]

100%

brics['country':'capital']

brics['country', 'capital']

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You run an algorithm. You want to stop your algorithm when the error is less than 0.01. Which tool would you use?

a pandas dataframe

a If/elif/else conditional flow

What is the output of the following code?

a, b, x, i = "3", 5, 0, 0
while b>2:
    x+=2
    b+=-1
print(x)

25%

75%

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When you have multiple lines in an if block, how do you indicate the end of the if block?

You omit the semicolon ; on the last line of the if block

You write endif

You de-indent the next line past the if block to the same level of indent as the original if statement

100%

You put the colon ':' character on a line by itself to indicate we are done with the if block

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When using the Pandas drop() method, what argument allows you to change the original DataFrame instead of returning a new one?

chr="arbre"

cpt=0
for car in chr:
    cpt+=1
print(cpt)
Which operation below does the same as the program above?

print(len(chr))

100%

len(chr)

25%

chr.len

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How do you start writing an if statement in Python?

What will the following code print out?

x = 0
if x < 2:
    print('Small')
elif x < 10:
    print('Medium')
else:
    print('LARGE')
print('All done')

'Small' then 'All done'

75%

'Small' then 'Medium' then 'All done'

25%

'Small' then 'LARGE'

'Small'

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