pymupdf extract all text from pdf
import sys, fitz
fname = sys.argv[1] # get document filename
doc = fitz.open(fname) # open document
out = open(fname + ".txt", "wb") # open text output
for page in doc: # iterate the document pages
text = page.get_text().encode("utf8") # get plain text (is in UTF-8)
out.write(text) # write text of page
out.write(bytes((12,))) # write page delimiter (form feed 0x0C)
out.close()