class_docstr: A strategy which produces dicts with a fixed set of keys, given a
  strategy for each of their equivalent values.
  
  e.g. {'foo' : some_int_strategy} would generate dicts with the single
  key 'foo' mapping to some integer.
class_docstr_tok: ["A","strategy","which","produces","dicts","with","a","fixed","set","of","keys",",","given","a","strategy","for","each","of","their","equivalent","values",".","e.g",".","{","'foo","'",":","some_int_strategy","}","would","generate","dicts","with","the","single","key","'foo","'","mapping","to","some","integer","."]
code: def pack(self, value):
      return self.dict_type(zip(self.keys, value))
  
imports: import copy
  from typing import Any, Iterable, Tuple, overload
  from hypothesis.errors import InvalidArgument
  from hypothesis.internal.conjecture import utils
  from hypothesis.internal.conjecture.junkdrawer import LazySequenceCopy
  from hypothesis.internal.conjecture.utils import combine_labels
  from hypothesis.internal.reflection import is_identity_function
  from hypothesis.strategies._internal.strategies import T3, T4, T5, Ex, MappedSearchStrategy, SearchStrategy, T, check_strategy, filter_not_satisfied
  from hypothesis.strategies._internal.utils import cacheable, defines_strategy
label_desc: Use image node_id 4 for calling the FixedKeysDictStrategy obj's underlying member method code with example usage: obj.pack(value) and returns: self