Python 2.7 mixing iteration and read methods would lose data

The problem is that you are using next and readline on the same file. As the docs say:

. As a consequence of using a read-ahead buffer, combining next() with other file methods (like readline()) does not work right.

The fix is trivial: replace next with readline.

Related Posts:

  1. TypeError: ‘int’ object is not subscriptable
  2. TypeError: ‘int’ object is not callable
  3. TypeError: ‘int’ object is not callable
  4. TypeError: ‘int’ object is not callable
  5. Cannot find module cv2 when using OpenCV
  6. Cannot find module cv2 when using OpenCV
  7. Python ‘If not’ syntax [duplicate]
  8. RuntimeWarning: invalid value encountered in divide
  9. Converting dictionary to JSON
  10. IndexError: tuple index out of range —– Python
  11. sklearn error ValueError: Input contains NaN, infinity or a value too large for dtype(‘float64’)
  12. sklearn error ValueError: Input contains NaN, infinity or a value too large for dtype(‘float64’)
  13. TypeError: cannot perform reduce with flexible type
  14. Could not find a version that satisfies the requirement tensorflow
  15. Local variable referenced before assignment?
  16. ln (Natural Log) in Python
  17. ImportError: numpy.core.multiarray failed to import
  18. Unable to plot Double Bar, Bar plot using pyplot for ndarray
  19. Cannot find module cv2 when using OpenCV
  20. Convert list to tuple in Python
  21. ImportError: numpy.core.multiarray failed to import
  22. How to remove \xa0 from string in Python?
  23. What is the meaning of [:] in python [duplicate]
  24. Why are Python’s ‘private’ methods not actually private?
  25. Remove list from list in Python
  26. How to create a new text file using Python
  27. TypeError: write() argument must be str, not bytes (Python 3 vs Python 2 )
  28. python socket.error: [Errno 98] Address already in use
  29. How to import files in python using sys.path.append?
  30. Check string “None” or “not” in Python 2.7
  31. Change figure size and figure format in matplotlib
  32. how to update spyder on anaconda
  33. how does \r (carriage return) work in Python
  34. What is Python buffer type for?
  35. AttributeError(“‘str’ object has no attribute ‘read'”)
  36. IndexError: index 1 is out of bounds for axis 0 with size 1/ForwardEuler
  37. Python Save to file
  38. Add list to set?
  39. Create 3D array using Python
  40. TypeError: unsupported operand type(s) for -: ‘list’ and ‘list’
  41. ImportError: No module named scipy
  42. AttributeError: ‘datetime’ module has no attribute ‘strptime’
  43. Python add item to the tuple
  44. Checking whether pip is installed?
  45. Converting binary to decimal integer output
  46. Decoding UTF-8 strings in Python
  47. How can I read pdf in python?
  48. No module named setuptools
  49. How to have an array of arrays in Python
  50. ValueError: unsupported pickle protocol: 3, python2 pickle can not load the file dumped by python 3 pickle?
  51. ValueError: unsupported pickle protocol: 3, python2 pickle can not load the file dumped by python 3 pickle?
  52. AttributeError(“‘str’ object has no attribute ‘read'”)
  53. How to use 2to3 properly for python?
  54. Why does using from __future__ import print_function breaks Python2-style print?
  55. How to fix: “UnicodeDecodeError: ‘ascii’ codec can’t decode byte”
  56. Python – ‘ascii’ codec can’t decode byte
  57. Python Error – int object has no attribute
  58. Loading a file with more than one line of JSON into Pandas
  59. Type error Unhashable type:set
  60. How to detect key presses?
  61. What is the difference between json.load() and json.loads() functions
  62. Python: count repeated elements in the list
  63. How to XOR two strings in Python
  64. Copy a list of list by value and not reference
  65. Why I get ‘list’ object has no attribute ‘items’?
  66. Python 101: Can’t open file: No such file or directory
  67. Split a python list into other “sublists” i.e smaller lists
  68. TypeError: argument of type ‘NoneType’ is not iterable
  69. scrapy run spider from script
  70. python error: TypeError: an integer is required
  71. If list index exists, do X
  72. Python Requests – No connection adapters
  73. How to detect key presses?
  74. Numpy, multiply array with scalar
  75. TypeError: coercing to Unicode: need string or buffer, list found
  76. urllib and “SSL: CERTIFICATE_VERIFY_FAILED” Error
  77. ‘virtualenv’ is not recognized as an internal or external command, operable program or batch file
  78. ImportError: cannot import name NUMPY_MKL
  79. Python: Pandas pd.read_excel giving ImportError: Install xlrd >= 0.9.0 for Excel support
  80. TypeError: super() takes at least 1 argument (0 given) error is specific to any python version?
  81. Split string using a newline delimiter with Python
  82. No module named urllib3
  83. Convert string to variable name in python
  84. AttributeError: ‘tuple’ object has no attribute
  85. Adding +1 to a variable inside a function
  86. dump() missing 1 required positional argument: ‘fp’ in python json
  87. How to open html file?
  88. “Python version 2.7 required, which was not found in the registry” error when attempting to install netCDF4 on Windows 8
  89. Installing scipy for python 2.7
  90. Install py2exe for python 2.7 over pip: this package requires Python 3.3 or later
  91. ImportError: No module named IPython
  92. Does python have header files like C/C++?
  93. How can I install a .egg Python package on Windows (attempt using easy_install not working)
  94. In python, how can I print lines that do NOT contain a certain string, rather than print lines which DO contain a certain string:
  95. input() error – NameError: name ‘…’ is not defined
  96. Symbol not found: __PyCodecInfo_GetIncrementalDecoder
  97. What does an ‘r’ represent before a string in python?
  98. Cannot remove entries from nonexistent file
  99. Python list index out of range on return value of split
  100. Python: OSError: [Errno 2] No such file or directory: ”

Leave a Comment

tech