Enumerate

Enumerate#

Another way to iterate (loop) over a list is enumerate(). With enumerate we’ll get an index for each item:

words = ['hello', 'world', '!']

# for-loop
for word in words:
    print(word)

# for-loop with enumerate
for index, word in enumerate(words):
    print(f"{index} : {word}")

hello
world
!
0 : hello
1 : world
2 : !

from fpdf import FPDF

pdf = FPDF(format=(115, 180))
pdf.set_font('Helvetica')

# Store a longer text in the variable 'text'. 
text = "Hello, world, with your shades of green and blue, You're here to stay, the morning dew. The vast expanse, the creatures, trees, Each tiny grain of sand at the sea's breeze. A symphony of life, a dance so free, Hello, world, in you we breathe."

# Print the data type 
print(type(text))

# Split the text into a list of sentences. 
sentences = text.split('.')

# Print the data type 
print(type(sentences))

# Print the sentences
print(sentences)

for index, sentence in enumerate(sentences):

    pdf.add_page()
    pdf.set_font_size(36)
    pdf.multi_cell(w=0, text=sentence, align='L')
    pdf.set_y(-24)
    pdf.set_font_size(10)
    pdf.cell(w=0, text=str(index+1), align='R')
    
pdf.output("pdfs/haiku_enumerate.pdf")

<class 'str'>
<class 'list'>
["Hello, world, with your shades of green and blue, You're here to stay, the morning dew", " The vast expanse, the creatures, trees, Each tiny grain of sand at the sea's breeze", ' A symphony of life, a dance so free, Hello, world, in you we breathe', '']

enumerate pdf

Split into chunks#

def split_into_chunks(string, chunk_size):
    chunks = []
    for i in range(0, len(string), chunk_size):
        chunks.append(string[i:i+chunk_size])
    return chunks

# Example usage
input_string = "This is an example string to be split into chunks of size 10"
chunk_size = 10
chunks = split_into_chunks(input_string, chunk_size)
for chunk in chunks:
    print(chunk)

Access list elements with their index#

l = [5, "hello", -1.5, "🐍", "🍕"*9]

print(l[1])
print(l[4])

hello
🍕🍕🍕🍕🍕🍕🍕🍕🍕

print(l[0])
print(l[-1])

5
🍕🍕🍕🍕🍕🍕🍕🍕🍕

from fpdf import FPDF

pdf = FPDF(format=(115, 180))
pdf.set_font('Helvetica')


with open('data/wordlist.txt', 'r') as f:
    wordlist = f.readlines()

with open('data/for_loop_haiku.txt', 'r') as f:  
    haiku = f.read()

# Split the haiku into a list
haiku_lines = haiku.split('\n')

# Iterate over the lines
for index, line in enumerate(haiku_lines):

    # Look up the page number through the index
    page_number = wordlist[index]

    pdf.add_page()
    pdf.set_font_size(36)
    pdf.multi_cell(w=0, text=line, align='L')
    pdf.set_y(-24)
    pdf.set_font_size(10)
    pdf.cell(w=0, text=page_number, align='R')

pdf.output("pdfs/haiku_enumerate_wordlist.pdf")

haiku enumerate wordlist

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